 
















             Installation/User's Guide: DECprint[TM] Utility for

             PostScript[R] to Sixel Printing for VMS

             Order Number: AA-NH56A-TE




             This manual describes how to install and use the DECprint
             Utility for POSTSCRIPT to Sixel Printing for VMS software on
             a VAX/VMS computer system.




             Revision/Update Information:  This is a new manual.

             Operating System and Version: VAX/VMS, Versions 5.1, 5.2, and
                                           5.3

             Software Version              DECprint Utility for POSTSCRIPT
                                           to Sixel Printing for VMS,
                                           Version 1.0



             Digital Equipment Corporation

 





             ________________________
             January 1990

             __________
             The information in this document is subject to change without
             notice and should not be construed as a commitment by Digital
             Equipment Corporation.

             Digital Equipment Corporation assumes no responsibility for
             any errors that may appear in this document.

             Any software described in this document is furnished under
             a license and may be used or copied only in accordance with
             the terms of such license. No responsibility is assumed for
             the use or reliability of software or equipment that is not
             supplied by Digital Equipment Corporation or its affiliated
             companies.

             Restricted Rights: Use, duplication, or disclosure by the
             U.S. Government is subject to restrictions as set forth in
             subparagraph (c)(1)(ii)  of the Rights in Technical Data and
             Computer Software clause at DFARS 252.227-7013.

             __________
             © Digital Equipment Corporation 1990. All rights reserved.

             Printed in U.S.A.

             __________
             The postpaid Reader's Comments forms at the end of this
             document request the user's critical evaluation to assist
             in preparing future documentation.

             The following are trademarks of Digital Equipment Corporation:

             DEC             DIBOL         UNIBUS
             DEC/CMS         EduSystem     VAX
             DEC/MMS         IAS           VAXcluster
             DECnet          MASSBUS       VMS
             DECsystem-10    PDP           VT
             DECSYSTEM-20    PDT
             DECUS           RSTS
             DECwriter       RSX           DIGITAL

             POSTSCRIPT is a registered trademark of Adobe Systems,
             Incorporated.

                                                                 MLO-S1325

 







                                                                  Contents
          ________________________________________________________________

                __________________________________________________________
                PREFACE                                                 xi


          ________________________________________________________________

          I INSTALLATION GUIDE

          ________________________________________________________________
          CHAPTER 1  BEFORE INSTALLATION                               1-1

                1.1   OVERVIEW                                         1-1
                1.1.1     PostScript Page Description Language         1-2
                1.1.2     Sixel Graphics                               1-2


                1.2   PRINTER SUPPORT                                  1-3

                1.3   HOST HARDWARE REQUIREMENTS                       1-3


                1.4   HOST SOFTWARE REQUIREMENTS                       1-4

                1.5   SOFTWARE DISTRIBUTION KIT                        1-4


                1.6   SOFTWARE LICENSE                                 1-4

                1.7   REQUIRED DISK SPACE                              1-5


                1.8   INSTALLATION TIME                                1-5




                                                                       iii

 






                1.9   INSTALLATION VERIFICATION PROCEDURE (IVP)
                      REQUIREMENTS                                     1-5


                1.10  INSTALLING THE DECPRINT UTILITY WITH THE LN03
                      IMAGE SOFTWARE                                   1-5

          ________________________________________________________________
          CHAPTER 2  INSTALLING THE SOFTWARE                           2-1


                2.1   INSTALLATION CHECKLIST                           2-1

                2.2   VMSINSTAL CONVENTIONS                            2-1


                2.3   VMSINSTAL RELEASE NOTES                          2-2

                2.4   INSTALLATION PROCEDURE                           2-3


                2.5   RUNNING THE IVP AFTER INSTALLATION               2-9

                2.6   SAMPLE INSTALLATION SESSION                     2-10


                2.7   IVP SAMPLE OUTPUT                               2-12

          ________________________________________________________________
          CHAPTER 3  POSTINSTALLATION REQUIREMENTS                     3-1


                3.1   CREATING LOGICAL NAMES FOR QUEUED PRINTING       3-1

                3.2   ENABLING OTHER NODES ON VAXCLUSTER SYSTEMS       3-4


                3.3   HOST AND PRINTER CHARACTERISTICS                 3-5

          iv

 






          ________________________________________________________________

          II USER'S GUIDE

          ________________________________________________________________
          CHAPTER 4  USING THE DECPRINT UTILITY COMMAND                4-1


                4.1   THE COMMAND LINE                                 4-2
                4.1.1     The DECprint Utility Command and Queued
                          Printers                                     4-3
                4.1.2     The DECprint Utility Command and Attached
                          Printers                                     4-4

                4.2   DEVICE SUPPORT                                   4-6


                4.3   DECPRINT UTILITY COMMAND QUALIFIERS              4-7
                4.3.1     /ATTACHED Qualifier                          4-8
                4.3.2     /LAYUP Qualifier                             4-9
                4.3.3     /MEDIUM Qualifier                           4-10
                4.3.4     /MESSAGES Qualifier                         4-11
                4.3.5     /ORIENTATION Qualifier                      4-13
                4.3.5.1     Page Orientation and /LAYUP               4-13

                4.4   PRINT QUALIFIERS THAT WORK DIFFERENTLY          4-14
                4.4.1     /AFTER Qualifier                            4-14
                4.4.2     /PARAMETERS Qualifier                       4-15


                4.5   UNSUPPORTED PRINT QUALIFIERS                    4-15
                4.5.1     Formating Qualifiers                        4-15
                4.5.2     File Selection Qualifiers                   4-16
                4.5.3     /FORM and /SETUP Qualifiers                 4-16
                4.5.4     Miscellaneous Qualifiers                    4-17

                4.6   SUBMITTING DECPRINT UTILITY COMMANDS FOR
                      BATCH PROCESSING                                4-17

                                                                         v

 







                4.7   COLOR PRINTING WITH DECPRINT UTILITY            4-21


                4.8   MISCELLANEOUS HELPFUL HINTS                     4-21
                4.8.1     Using Transparencies with the LJ250
                          Companion Color Printer                     4-22
                4.8.2     Printing PostScript Documents From MAIL     4-22
                4.8.3     Running the DECprint Utility in the
                          Background                                  4-22
                4.8.4     Printer Margin Information                  4-23

                4.9   SUMMARY OF DECPRINT UTILITY QUALIFIERS          4-24


          ________________________________________________________________
          INDEX                                                    Index-1

          ________________________________________________________________
          CHAPTER 5  SYSTEM MESSAGES                                   5-1


                5.1   MESSAGE FORMAT                                   5-1

                5.2   SEVERITY LEVEL                                   5-2


                5.3   MESSAGE DESCRIPTIONS                             5-2

          ________________________________________________________________
          APPENDIX A  CREATING A PRINT QUEUE FOR THE DECPRINT
                      UTILITY                                          A-1


                A.1   RENAMING AND EDITING THE PRINTER STARTUP
                      COMMAND FILE                                     A-2
                A.1.1     Renaming the Startup File                    A-2
                A.1.2     Editing the Startup File                     A-2

          vi

 







                A.2   UPDATING THE SYSTEM STARTUP FILE                 A-5


                A.3   PSPRINT$STARTUP QUEUE SETUP TOPICS               A-5
                A.3.1     Device Control Library                       A-5
                A.3.2     Terminal Device Type                         A-6
                A.3.3     Separation Pages                             A-6
                A.3.4     /PROCESSOR Qualifier                         A-6

          ________________________________________________________________
          APPENDIX B  POSTSCRIPT LANGUAGE EXTENSIONS                   B-1


                B.1   USING POSTSCRIPT EXTENSIONS                      B-3

                B.2   PERSISTENT AND VOLATILE PARAMETERS               B-4


                B.3   IDENTIFICATION EXTENSIONS                        B-5
                B.3.1     Product                                      B-6
                B.3.2     Device Components                            B-6
                B.3.3     Version                                      B-7
                B.3.4     Revision                                     B-7
                B.3.5     Job Name                                     B-7

                B.4   PAGECOUNT AND SHEETCOUNT OPERATORS               B-7


          ________________________________________________________________
          APPENDIX C  COLOR EXTENSIONS FOR THE POSTSCRIPT LANGUAGE     C-1

                C.1   ABOUT THE POSTSCRIPT LANGUAGE COLOR
                      EXTENSIONS                                       C-1


                C.2   ABOUT THIS APPENDIX                              C-2


                                                                       vii

 






                C.3   INTRODUCTION                                     C-2


                C.4   NEW FEATURES                                     C-4
                C.4.1     CMYK Color Specification                     C-4
                C.4.2     Black Generation and Undercolor Removal      C-5
                C.4.3     Direct CMYK Color Specification              C-8
                C.4.4     Color Screens, Transfer Functions, and
                          Images                                       C-9
                C.4.4.1     colorimage                                 C-9
                C.4.4.1.1     Data formats for colorimage operator    C-10
                C.4.4.1.2     Examples for colorimage operator        C-12
                C.4.5     Color Implementations                       C-16

                C.5   OPERATORS                                       C-17
                COLORIMAGE                                            C-18
                CURRENTBLACKGENERATION                                C-21
                CURRENTCMYKCOLOR                                      C-22
                CURRENTCOLORSCREEN                                    C-23
                CURRENTCOLORTRANSFER                                  C-25
                CURRENTUNDERCOLORREMOVAL                              C-26
                SETBLACKGENERATION                                    C-27
                SETCMYKCOLOR                                          C-29
                SETCOLORSCREEN                                        C-31
                SETCOLORTRANSFER                                      C-34
                SETUNDERCOLORREMOVAL                                  C-37


          ________________________________________________________________
          APPENDIX D  TROUBLESHOOTING PROCEDURES                       D-1

                D.1   YOUR DECPRINT UTILITY JOB DOES NOT PRINT         D-1


                D.2   YOUR JOB REPORTS UNDEF ERROR MESSAGES            D-1
                D.2.1     Unsupported File Extensions                  D-2
                D.2.2     Unsupported PostScript Operators             D-2
                D.2.3     Problems With Files Containing CTRL/D        D-3

          viii

 







                D.3   TROUBLESHOOTING COLOR PRINTING PROBLEMS          D-3
                D.3.1     Your Color Output is Black                   D-4
                D.3.2     Thin Lines Don't Print                       D-4
                D.3.3     Incorrect Colors                             D-4


                D.4   YOUR SETUP MODULES DO NOT WORK                   D-5

                D.5   /PARAMETERS=(NUMBER_UP=2) DOES NOT WORK          D-5


                D.6   UNEXPECTED PAGE ORIENTATION                      D-5

                D.7   DECPRINT UTILITY JOBS OCCUPY YOUR TERMINAL
                      FOR TOO LONG                                     D-6


                D.8   FAINT DIAGONAL LINES WITH A WRITE-WHITE
                      ENGINE                                           D-6

                D.9   THE POSITION OF THE IMAGE IS WRONG               D-6


          ________________________________________________________________
          GLOSSARY                                              Glossary-1

          ________________________________________________________________
          INDEX                                                    Index-1










                                                                        ix

 






          ________________________________________________________________
          EXAMPLES

                2-1   Sample Installation Session                     2-10

                3-1   Defining Device Type Logical Names               3-3

                4-1   Example with /ATTACHED                           4-9

                4-2   Examples with /LAYUP                            4-10

                4-3   Example with /MEDIUM                            4-11

                4-4   Examples with /MESSAGES                         4-13

                4-5   Examples Using the Batch-PSPRINT.com File       4-19

                4-6   The Batch-PSPRINT Command File                  4-20

                A-1   Sample Execution Queue                           A-3

                B-1   Determining Whether a Name Is Defined            B-3

                B-2   Accessing Extensions Located in statusdict       B-4

          ________________________________________________________________
          TABLES

                3-1   Supported Devices                                3-3

                4-1   Attached Printers and Control Characters         4-5

                4-2   Media Keywords                                  4-10

                4-3   Printer Margins in Inches                       4-23

                4-4   DECprint Utility Qualifiers                     4-24

                4-5   Qualifiers Supported for Attached Printers      4-26

                B-1   Persistent Parameters                            B-5

                B-2   Volatile Parameters                              B-5

          x

 













                                                                   Preface
          ________________________________________________________________


          __________________________________________________________

          Intended Audience

             The Installation/User's Guide: DECprint[TM] Utility for
             POSTSCRIPT[R] to Sixel Printing for VMS is intended for the
             following users:

              o System managers who will install the DECprint Utility for
                POSTSCRIPT to Sixel Printing for VMS software

              o Users who want to print POSTSCRIPT files on sixel printers

          __________________________________________________________

          Document Structure

             This manual contains the following parts, chapters, and
             appendixes:

             Part I - Installation Guide

              o Chapter 1 provides an overview and describes preinstalla-
                tion requirements for the DECprint Utility software.

              o Chapter 2 explains how to install the software.

              o Chapter 3 describes postinstallation requirements.

                                                                        xi

 






             Part II-User's Guide

              o Chapter 4 explains how to use the DECprint Utility command
                to print POSTSCRIPT files on your ANSI/sixel printer.

              o Chapter 5 describes the DECprint Utility system messages
                and, if necessary, recovery procedures.

              o Appendix A explains how to create a print queue to use
                with the DECprint Utility command.

              o Appendix B describes POSTSCRIPT operators specific to the
                DECprint Utility software.

              o Appendix C describes POSTSCRIPT color operators.

              o Appendix D describes troubleshooting steps.

          __________________________________________________________

          Conventions

             This document uses the following conventions:

             _____________________________________________________________
             ConventionMeaning____________________________________________

             UPPERCASE In command format, type the word or letter exactly
             notation  as shown.

             lowercase In command format, substitute a word or value of
             notation  your choice.

             Boldface  Boldface words and letters used in formats, exam-
                       ples, and text specify POSTSCRIPT keywords. In page
                       descriptions, you should type the keyword exactly
                       as shown.


          xii

 





             _____________________________________________________________
             ConventionMeaning____________________________________________

             Italics   When italic words and letters appear in command
                       formats, substitute an appropriate word or value
                       for the word or letter.

             [ ]       Square brackets in command formats indicate that
                       the enclosed item is optional.

             { }       Braces in command formats enclose lists from which
                       you must choose one alternative. The choices are
                       listed vertically or separated by the vertical bar
                       symbol (|).

             ...       A horizontal ellipsis in command formats indicates
                       that the preceding item(s) can be repeated one or
                       more times.

                       A vertical ellipsis in examples indicates that code
                 .     has been omitted.
                 .
                 .

             <Ctrl/X>  This symbol indicates that you should press the key
                       labeled Ctrl while you simultaneously press another
                       key, for example, Ctrl/Z, Ctrl/C, Ctrl/O.

             <Return>  This symbol indicates that you should press the
             __________Return_key.________________________________________


          __________________________________________________________

          Associated Documents

             The installation procedures are based on the VMSINSTAL com-
             mand procedure of VAX/VMS. Additional information on this


                                                                      xiii

 






             procedure can be found in the Guide to VAX/VMS Software
             Installation.

             Other documents that may be helpful for users of the DECprint
             Utility include:

              o Programmer's Supplement: POSTSCRIPT Printers (AA-HL84C-TE)

              o VMS System Messages and Recovery Procedures Reference
                Manual: Part I A-L (AA-LA17A-TE)

              o VMS System Messages and Recovery Procedures Reference
                Manual: Part II M-Z (AA-LA18A-TE)

              o POSTSCRIPT Language Reference Manual (AA-HL86A-TE)

              o POSTSCRIPT Language Tutorial and Cookbook (AA-HL87A-TE)

              o VMS DCL Dictionary (AA-LA12A-TE)

              o VMS License Management Utility Manual (AA-LA33A-TE)


















          xiv

 





          ________________________________________________________________


          I Installation Guide

             This section describes how to install the DECprint Utility
             for POSTSCRIPT to Sixel Printing for VMS software on a
             VAX/VMS system, and details preinstallation and postinstalla-
             tion requirements.

 











                                                                 Chapter 1


                                                       Before Installation
          ________________________________________________________________


             You can install the DECprint Utility for POSTSCRIPT to Sixel
             Printing for VMS software on any VAX/VMS computer system.
             This chapter provides an overview of the DECprint Utility
             product and lists the preinstallation requirements for the
             DECprint Utility software.

          __________________________________________________________

          1.1  Overview

             DECprint Utility for POSTSCRIPT to Sixel Printing for VMS
             software lets you print POSTSCRIPT files on Digital sixel
             printers. The software uses a host-based Adobe POSTSCRIPT
             interpreter to translate your POSTSCRIPT input files. The
             DECprint Utility prints to a printer attached to your termi-
             nal (see Figure 1-1) or submits to a queue for printing (see
             Figure_1-2)._________________________________________________










                                                  Before Installation  1-1

 






             _____________________________________________________________

             The DECprint Utility software provides a single command line
             that accepts qualifiers similar to the DCL PRINT command.
             You invoke the software with the DECprint Utility command,
             PSPRINT:

               $ PSPRINT/qualifier filename.PS[,...]

             Most DCL PRINT qualifiers give the same results when used
             with the DECprint Utility command. For information on the
             DECprint Utility command see Chapter 4.

          __________________________________________________________

          1.1.1  PostScript Page Description Language

             Digital uses the POSTSCRIPT page description language by
             Adobe as a standard for its POSTSCRIPT printers, such
             as the LN03R ScriptPrinter and the PrintServer family of
             network printers. This language describes the appearance of
             text, images, and graphics on the printed page. POSTSCRIPT
             provides high-quality printing that fully integrates text and
             graphics.

          __________________________________________________________

          1.1.2  Sixel Graphics

             The sixel protocol is compatible with Digital printers that
             use the ANSI text protocol. The sixel protocol defines
             and transmits encoded bitmap data over a stream-oriented
             communications line. Sixels allow devices to receive and
             print black and white (or color) bitmap data at various sizes
             to create a graphic image. Six bits (a sixel) of each 7-bit
             or 8-bit character code represent the bitmap data. Remaining
             values control the context of the communications line and fit
             the sixels to the ANSI text syntax.

          1-2  Before Installation

 





          __________________________________________________________

          1.2  Printer Support

             DECprint Utility software supports printing on queued
             printers and printers attached to your terminal. You can
             use the utility to print to the following sixel printers:

              o LA75 Companion Printer

              o LA210 Letterprinter

              o LA324 MultiPrinter

              o LJ250 Companion Color Printer

              o LN03 PLUS Desktop Laser Printer

             In addition, the DECprint Utility software supports the above
             printers attached to the following terminals:

              o VT100, VT102, and VT131 with printer ports

              o VT200 Series

              o VT300 Series

          __________________________________________________________

          1.3  Host Hardware Requirements

             The host system must have an input device that corresponds to
             the DECprint Utility for POSTSCRIPT to Sixel Printing for VMS
             Software Distribution Kit. The distribution kit is available
             on the following media:

              o Magnetic tape (1600 BPI)

              o TK50 COMPACTape cartridge

             DECprint Utility software runs on any VAX/VMS computer system
             and requires no specific serial line communications hardware.
             The DECprint Utility software uses the VMS job controller to
             communicate with queued printers and the terminal driver for
             attached printers.

                                                  Before Installation  1-3

 





          __________________________________________________________

          1.4  Host Software Requirements

             The host must be running VMS, Version 5.1 or 5.2. The
             installation procedure uses the VMSINSTAL utility.

          __________________________________________________________

          1.5  Software Distribution Kit

             Check the contents of the DECprint Utility for POSTSCRIPT to
             Sixel Printing for VMS Software Distribution Kit against the
             bill of materials. You should have the following:

              o Software labeled DECprint Utility for POSTSCRIPT to Sixel
                Printing for VMS, Version 1.0, in one of the listed media
                forms

              o Installation/User's Guide: DECprint[TM] Utility for
                POSTSCRIPT[R] to Sixel Printing for VMS

          __________________________________________________________

          1.6  Software License

             DECprint Utility for POSTSCRIPT to Sixel Printing for VMS
             uses the VMS License Management Facility (LMF) software and
             requires a Product Authorization Key (PAK). The DECprint
             Utility product name for its PAK is PS-PRINT.

             The DECprint Utility software has an activity license that
             allows the execution of one DECprint Utility job at a time.
             For two users to access the DECprint Utility at the same
             time, you need two licenses.

             See Section 4.6 for a command file that submits a DECprint
             Utility job for batch processing, checks for the DECprint
             Utility activity on the system, and enters the DECprint
             Utility command for processing when the software is
             available.

          1-4  Before Installation

 





          __________________________________________________________

          1.7  Required Disk Space

             The installation of the DECprint Utility software requires
             3,400 disk blocks. After installation, this software requires
             approximately 3,000 disk blocks for operation.

          __________________________________________________________

          1.8  Installation Time

             DECprint Utility installation on the host system can take up
             to 15 minutes, depending on the type of distribution media,
             and on the activity on the host system.

          __________________________________________________________

          1.9  Installation Verification Procedure (IVP) Requirements

             To print the file created by the Installation Verification
             Procedure, requires the following:

              o A supported printer on a queue

              o A product authorization key (PAK) for PS-PRINT

          __________________________________________________________

          1.10  Installing the DECprint Utility with the LN03 Image

                Software

             If you are installing the DECprint Utility, Version 1.0,
             software and the LN03 Image Support Software, Version 1.0, on
             your system, you must do the following:

              1.Install the following kits for the LN03 Image printer:

                   VAX LN03 Image Support Software, Version 1.0
                   VAX ScriptPrinter Software, Version 2.1

              2.Install the DECprint Utility software

                                                  Before Installation  1-5

 






              3.Execute the following command after completing the
                installation procedures:

                  $ @SYS$UPDATE:PSPRINT$UPDATE_LN03Q.COM

                Your screen displays the following message when the
                command procedure completes:

                  Your VAX LN03 Image Support Software and VAX ScriptPrinter Software
                  have been successfully updated.  If you reinstall these products,
                  you must rerun this command file.

             Reinstalling DECprint Utility software does not require
             rerunning the command file.

                                          NOTE

                 Following these steps, which includes executing this
                 command file, is only necessary if you use the LN03
                 Image printer and the DECprint Utility software on
                 the same system. Do not run the command file to use
                 Vax ScriptPrinter software and the DECprint Utility
                 software on the same system.
















          1-6  Before Installation

 











                                                                 Chapter 2


                                                   Installing the Software
          ________________________________________________________________


             This chapter describes how to install the DECprint Utility
             software on a VAX/VMS system, using the VMSINSTAL procedure.
             If you are not familiar with the VMSINSTAL utility, see the
             Guide to VAX/VMS Software Installation.

          __________________________________________________________

          2.1  Installation Checklist

             Make sure you have the following prerequisites before
             beginning the installation procedure:

              o A backup copy of the software distribution media

              o Distribution media on an appropriate input device

              o Adequate system disk space (see Section 1.7)

              o Access to a privileged account on the host system

          __________________________________________________________

          2.2  VMSINSTAL Conventions

             The VMSINSTAL procedure is interactive. The system prompts
             and responds with statements, queries, and messages.

                                              Installing the Software  2-1

 






             Instructions guide you through the procedure or provide you
             with information relevant to subsequent queries. Statements
             inform you of the status or progress of the installation
             procedure.

             Queries are preceded by an asterisk (*) and can be followed
             by default responses enclosed in brackets ([]).  Enter your
             response, followed by <Return>. Just press <Return> to enter
             the default response. If you are not sure of the response,
             enter a question mark (?). The VMSINSTAL procedure displays
             explanatory text and repeats the prompt.

             Messages specific to VMSINSTAL are documented in the Guide
             to VAX/VMS Software Installation. Messages specific to the
             installation of the DECprint Utility interpreter are found in
             Chapter 5.

          __________________________________________________________

          2.3  VMSINSTAL Release Notes

             A machine-readable copy of the DECprint Utility Release Notes
             is included on the software distribution media. If you wish
             to display or print the release notes, specify OPTIONS N on
             the VMSINSTAL command line:

               $ @SYS$UPDATE:VMSINSTAL PSPRINT010 device-id OPTIONS N

             PSPRINTnnn is the name of the software saveset for the
             DECprint Utility for POSTSCRIPT to Sixel Printing for
             VMS. The variable nnn represents the version number of the
             product. For example, 010 represents Version 1.0.

             If you did not specify OPTIONS N on the command line, the
             release notes are automatically copied to SYS$HELP. To print
             the release notes after installation of the product, enter
             the following command:

               $ PRINT/QUEUE=queue-name SYS$HELP:PSPRINT010.RELEASE_NOTES

             See Section 2.4 for more information.

          2-2  Installing the Software

 





          __________________________________________________________

          2.4  Installation Procedure

             This section contains excerpts from the installation
             procedure and provides explanatory text. For a sample
             installation session, see Section 2.6.

             Before invoking VMSINSTAL, log in to the system manager's
             account and set your default device and directory to
             SYS$UPDATE.

          <Return>

               Username: SYSTEM <Return>
               Password:        <Return>
               $ SET DEFAULT SYS$UPDATE  <Return>

             Invoke the VMSINSTAL procedure as follows:

               $ @SYS$UPDATE:VMSINSTAL PSPRINT010 device-id OPTIONS N

             where:

             PSPRINT010    is the name of the DECprint Utility for
                           POSTSCRIPT to Sixel Printing for VMS software
                           saveset. The 010 indicates this is Version 1.0.

             device-id     is the device on which the distribution media
                           is mounted.

             OPTIONS N     is the release notes option, which allows you
                           to display and/or print a copy of the release
                           notes.

             The VMSINSTAL utility displays its banner line, the date
             and time, the statement that you can enter a question mark
             (?) at any time for help, and one or more warning messages
             if appropriate. You can continue the installation or exit
             to modify the conditions causing the warning messages. If
             the DECnet network is up and running, you always get the
             following messages:

                                              Installing the Software  2-3

 






               %VMSINSTAL-W-DECNET, Your DECnet network is up and running.
               * Do you want to continue anyway [NO]?

             Answer YES to continue. The DECnet network has no impact on
             the installation of this product. You are then asked:

               * Are you satisfied with the backup of your system disk [YES]?

             Answer YES to continue or NO to exit. If you answered NO,
             make a backup and begin VMSINSTAL again.

             If you did not provide the device_id (location of the
             distribution media) on the VMSINSTAL command line, the
             VMSINSTAL procedure then asks:

               * Where will the distribution volumes be mounted:

             Provide the name of the device on which the distribution
             media is to be mounted. If the distribution media is
             mountable, VMSINSTAL then asks for confirmation that the
             distribution media has been mounted.

                Please mount the first volume of the set on device-id:
               * Are you ready?

             Answer YES when ready.

             The procedure displays the name and version of the product
             being installed, the start time of the installation, and
             confirmation of the restoration of each saveset on the
             distribution media.

               The following products will be processed:

                 PSPRINT V1.0

               Beginning installation of PSPRINT V1.0 at hh:mm

               %VMS-I-RESTORE, Restoring product saveset A ...

          2-4  Installing the Software

 






             Choosing release notes options

             If you specified OPTIONS N in the command, the following
             release notes options are displayed:

                  Release Notes Options:
                         (1) Display release notes
                         (2) Print release notes
                         (3) Both 1 and 2
                         (4) Copy release notes to SYS$HELP
                         (5) Do not display, print or copy release notes

             If you select 1, the release notes are displayed on your
             terminal and copied to PSPRINT010.RELEASE_NOTES in SYS$HELP.

             If you select 2, the release notes are queued to the printer
             and copied to PSPRINT010.RELEASE_NOTES in SYS$HELP.

             If you select 3, the release notes are displayed on
             your terminal, queued to the printer, and copied to
             PSPRINT010.RELEASE_NOTES in SYS$HELP.

             If you select 4, the release notes are copied to
             PSPRINT010.RELEASE_NOTES in SYS$HELP.

             If you select 5, the release notes are deleted without being
             printed, displayed, or copied to SYS$HELP.

             If you did not specify OPTIONS N, the release notes are
             automatically copied to SYS$HELP. When the release notes
             are copied to SYS$HELP, VSMINSTALL displays this message:

               %VMSINSTAL-I-RELMOVED, The product's release notes have been
               successfully moved to SYS$HELP.

             VMSINSTAL then displays a copyright message and information
             on the product you are installing.


                                              Installing the Software  2-5

 






               Installing DECprint Utility for PostScript to Sixel Printing, V1.0
               © Digital Equipment Corporation 1989. All Rights Reserved.

                    Product:      PS-PRINT
                    Producer:     DEC
                    Version:      1.0
                    Release Date: 15-DEC-1989

             VMSINSTAL asks if you have registered and loaded the
             authorization key for the DECprint Utility product.

               * Does this product have an authorization key registered and
               loaded?

             If you answer no to this question, you cannot run the
             Installation Verification Procedure (IVP) as part of the
             installation procedure. The VMSINSTAL procedure displays the
             following message and suggestions:

               %PSPRINT-E-NOLICENSE, DECprint Utility execution requires a valid
               license.
               %PSPRINT-E-NOIVP, The IVP will not be run as part of the
               installation.
               %PSPRINT-E-NOIVP, It is recommended that the IVP be run after
               a valid license is loaded.

             Running the IVP

             If you have registered and loaded the product authorization
             key (PAK) and answer yes to the last question, the
             VMSINSTAL procedure asks if you wish to run the installation
             verification procedure (IVP):

               * Do you want to run the IVP after the installation [YES]?

                                          NOTE

                 You cannot run the IVP on a printer attached to the
                 printer port of your terminal.

          2-6  Installing the Software

 






             If you answered yes to running an IVP, the procedure asks you
             for the name of the execution queue where the IVP will print
             and for the device type of the printer on the queue.

               * Enter an execution queue name for the IVP: queue-name_ansi

               * Enter the device type for QUEUE-NAME_ANSI: lj250

                                          NOTE

                 The queue entered for the IVP must be an execution
                 queue, otherwise, you receive an error message stating
                 that the DECprint Utility could not determine the
                 device type.

             For valid device types, see Table 3-1. For a sample IVP
             printout, see Section 2.7. See Section 2.5, for instructions
             on how to run the IVP after installing the software.

             VMSINSTALL asks if you wish to purge files replaced by the
             installation:

               * Do you want to purge files replaced by this installation
               [YES]?

             At this point, VMSINSTAL displays a message telling you that
             no more questions will be asked:

               PSPRINT-I-NOMOREQUEST, No more questions will be asked

               %VMSINSTAL-I-RESTORE, Restoring product saveset B ...

             The VMSINSTAL procedure now creates a directory for the
             installation verification procedure (IVP) test files,
             installs the host-based POSTSCRIPT interpreter, and displays
             the following messages:

               %VMSINSTAL-I-SYSDIR,  This product creates system disk
               directory VMI$ROOT:[SYSTEST.PSPRINT].

               %CREATE-I-EXISTS, VMI$ROOT:[SYSTEST.PSPRINT] already exists

                                              Installing the Software  2-7

 






               %VMSINSTAL-I-SYSDIR, This product creates system disk
               directory  VMI$ROOT:[SYSHLP.EXAMPLES.PSPRINT].

               %PSPRINT-PSINSTAL, Installing version V1.1 of the HostPS
               interpreter

             The installation procedure checks to see if a version of
             the HostPS interpreter already exists on your system. If the
             version of the HostPS interpreter in the installation kit is
             the same or later than the version already installed on your
             system, the procedure installs the HostPS version in the kit.
             If the version of the HostPS interpreter already installed
             is a later version than the interpreter in the installation
             kit, the procedure does not install the HostPS interpreter
             and displays a message:

               %PSPRINT-I-PSEXISTS, Version V1.2 of the HostPS interpreter
               already exists

             VMSINSTAL then moves files from their temporary locations
             used during installation to their permanent directories.

               %VMSINSTAL-I-MOVEFILES, Files will now be moved to their target
               directories...

             If you answered yes to running the installation verification
             procedure (IVP), it runs now.

               Verifying DECprint Utility for PostScript to Sixel Printing, V1.0.

               Job PSPRINT$IVP (queue QUEUE-NAME_ANSI, entry 920) started
               on QUEUE-NAME

             VMSINSTAL displays this message to indicate that the IVP was
             successful:

               Verification succeeded.


          2-8  Installing the Software

 






             VMSINSTAL issues its terminating messages:

                       Installation of PSPRINT V1.0 completed at hh:mm

                       VMSINSTAL procedure done at hh:mm
               $

             DECprint Utility for POSTSCRIPT to Sixel Printing for VMS
             software is now installed and can be invoked with the PSPRINT
             command.

             The installation procedure modifies the DCL command table
             so that the PSPRINT command is recognized and processed.
             However, the old command table is still in effect for those
             users who are currently logged in. Users who are already
             logged in and who want to use the PSPRINT command must log
             out of the system and log in again.

          __________________________________________________________

          2.5  Running the IVP After Installation

             To run the Installation Verification Procedure after
             installing the software, enter the following command at the
             prompt:

               $ @SYS$TEST:PSPRINT$IVP

             PSPRINT$IVP.COM displays a beginning message, asks you to
             enter a queue name and device type, submits the IVP to the
             queue, and displays a message saying that the procedure was
             successful:

               Verifying DECprint Utility for PostScript to Sixel Printing, V1.0.

               Enter a queue name: my_lj250  <Return>

               Enter the device type for MY_LJ250: lj250 <Return>

               Verification succeeded.

                                              Installing the Software  2-9

 





          __________________________________________________________

          2.6  Sample Installation Session

             Example 2-1 shows a sample installation session of the
             DECprint Utility software on a VAX/VMS host:

             Example 2-1:  Sample Installation Session
             _____________________________________________________________

             $ @sys$update:vmsinstal psprint sys$update

                     VAX/VMS Software Product Installation Procedure V5.1

             It is 23-AUG-1989 at 09:15.
             Enter a question mark (?) at any time for help.

             %VMSINSTAL-W-DECNET, Your DECnet network is up and running.
             %VMSINSTAL-W-ACTIVE, The following processes are still active:
                     COYOTE
                     EAGLE
                     COBRA_1
                     GAZELLE
             * Do you want to continue anyway [NO]? yes
             * Are you satisfied with the backup of your system disk [YES]? yes

             The following products will be processed:

               PSPRINT V1.0

                     Beginning installation of PSPRINT V1.0 at 09:16

             %VMSINSTAL-I-RESTORE, Restoring product saveset A ...
             %VMSINSTAL-I-RELMOVED , The product's release notes have been
              successfully moved to SYS$HELP.

             _____________________________________________________________
             Example 2-1 Cont'd on next page


          2-10  Installing the Software

 






             Example 2-1 (Cont.):  Sample Installation Session
             _____________________________________________________________

             Installing DECprint Utility for PostScript to Sixel Printing, V1.0

             © Digital Equipment Corporation 1989. All Rights Reserved.

                     Product:      PS-PRINT
                     Producer:     DEC
                     Version:      1.0
                     Release Date: 15-DEC-1989

             * Does this product have an authorization key registered and loaded?
             yes
             * Do you want to run the IVP after the installation [YES]? yes
             * Enter an execution queue name for the IVP: lj250_b
             * Enter the device type for LJ250_B: LJ250
             * Do you want to purge files replaced by this installation [YES]?
             yes

             %PSPRINT-I-NOMOREQUEST, No more questions will be asked
             %VMSINSTAL-I-RESTORE, Restoring product saveset B ...
             %VMSINSTAL-I-SYSDIR, This product creates system disk directory
             VMI$ROOT:[SYSTEST.PSPRINT].
             %VMSINSTAL-I-SYSDIR, This product creates system disk directory
             VMI$ROOT:[SYSHLP.EXAMPLES.PSPRINT].
             %PSPRINT-I-PSINSTAL, Installing version V1.1 of the HostPS
              interpreter
             %VMSINSTAL-I-MOVEFILES, Files will now be moved to their target
              directories...

             _____________________________________________________________
             Example 2-1 Cont'd on next page






                                             Installing the Software  2-11

 






             Example 2-1 (Cont.):  Sample Installation Session
             _____________________________________________________________

             Verifying DECprint Utility for PostScript to Sixel Printing, V1.0.

             Job PSPRINT$IVP (queue LJ250_B, entry 920) started on LJ250

             Verification succeded.

                     Installation of PSPRINT V1.0 completed at 09:26

                     VMSINSTAL procedure done at 09:26

             $

             _____________________________________________________________

          __________________________________________________________

          2.7  IVP Sample Output

             Figure 2-1 shows the black-and-white IVP output of the
             sample POSTSCRIPT program that the DECprint Utility software
             submitted to a print queue for printing on a sixel printer.

             If you enter the execution queue name for a printer with
             color for your IVP, the color output is as follows:

              o DECprint Utility prints with red letters

              o Successfully prints in green

              o Installed prints in blue






          2-12  Installing the Software

 






             _____________________________________________________________






































                                             Installing the Software  2-13

 











                                                                 Chapter 3


                                             Postinstallation Requirements
          ________________________________________________________________


             This chapter explains the operations to be performed after
             the installation of the DECprint Utility software. These
             operations should be performed by a system or cluster
             manager.

          __________________________________________________________

          3.1  Creating Logical Names for Queued Printing

             DECprint Utility software needs to know the device type
             of the printer. For queued printers, which you indicate in
             the DECprint Utility command with the /QUEUE qualifier, the
             software gets the device type from a logical name. Logical
             names must be defined by the system manager. Define a logical
             name for each execution queue to which system users will
             direct DECprint Utility jobs.

             To define device type logical names, add the
             following command to the system startup file
             SYS$MANAGER:SYSTARTUP_V5.COM for each DECprint Utility
             execution queue:

               $ DEFINE/SYSTEM/EXEC/NOLOG PSPRINT$queue_DEVICE_TYPE -
                 device_type



                                        Postinstallation Requirements  3-1

 






             where:

             queue     is the name of the execution queue for the printer.

             device-types the device type of the printer (see Table 3-1
                       for supported device types).

             DECprint Utility software resolves queue logical names and
             looks for the device type of the execution queue. If the
             device type is not defined you receive the following error
             message:

               PSPRINT-E-NODEVTYPE, could not determine device type for
               queue-name

             Make sure that generic queue names used with the /QUEUE
             qualifier for the DECprint Utility command point to execution
             queues that serve only one type of printer; otherwise you
             receive this error message:

               PSPRINT-E-NOMIXDEV, all execution queues must have the same
               device type

             Example:

             Example 3-1 shows sample commands to add to the system
             startup file to define the device type logical names
             for DECprint Utility printing. For example, you have the
             following printers that you plan to use to print the output
             from the DECprint Utility command:

             _____________________________________________________________
                                     Execution
             Printer_________________Queue_Name__Device_Type_Keyword______

             LJ250 Companion Color   LJ250_COLOR LJ250
             Printer


          3-2  Postinstallation Requirements

 





             _____________________________________________________________
                                     Execution
             Printer_________________Queue_Name__Device_Type_Keyword______

             LJ250 Companion Color   NEDS_LJ250  LJ250
             Printer

             LN03 PLUS Desktop       LN03_A      LN03S
             Laser Printer

             LN03 PLUS Desktop       LN03_B      LN03S
             Laser_Printer________________________________________________


             Example 3-1:  Defining Device Type Logical Names
             _____________________________________________________________

             $ DEFINE/SYSTEM/EXEC/NOLOG PSPRINT$lj250_color_DEVICE_TYPE lj250

             $ DEFINE/SYSTEM/EXEC/NOLOG PSPRINT$neds_lj250_DEVICE_TYPE lj250

             $ DEFINE/SYSTEM/EXEC/NOLOG PSPRINT$ln03_a_DEVICE_TYPE ln03s

             $ DEFINE/SYSTEM/EXEC/NOLOG PSPRINT$ln03_b_DEVICE_TYPE ln03s

             _____________________________________________________________

             Table 3-1 lists the printers supported by the DECprint
             Utility software that includes valid values for the
             device-type keyword:

             Table_3-1:__Supported_Devices________________________________

                                     Device
                                     Type        Resolution (dpi)
             Device_Name_____________Keyword_____horiz_x_vert_____________

             LA75 Companion Printer  LA75        144 x 144

             LA210 Letterprinter     LA210       132 x 72

                                        Postinstallation Requirements  3-3

 






             Table_3-1_(Cont.):__Supported_Devices________________________

                                     Device
                                     Type        Resolution (dpi)
             Device_Name_____________Keyword_____horiz_x_vert_____________

             LA324 MultiPrinter      LA324       180 x 180

             LA324 MultiPrinter      LA324COLOR  180 x 180
             (color ribbon)

             LJ250 Companion Color   LJ250       180 x 180
             Printer

             LN03 PLUS Desktop       LN03S       300 x 300
             Laser_Printer________________________________________________

                                          NOTE

                 PSPRINT$queue_DEVICE_TYPE logicals must be created
                 and maintained by the system manager. They are not
                 created during the installation of the software.
                 Future products may not support this mechanism.

          __________________________________________________________

          3.2  Enabling Other Nodes on VAXcluster Systems

             The installation procedure modifies the DCL command table on
             the node where you installed the DECprint Utility software.
             To enable the DECprint Utility command on other nodes of the
             VAXcluster Systems environment, you must install the new DCL
             command table on the other nodes. Complete this procedure
             to install the DCL command table on the other nodes in the
             cluster:




          3-4  Postinstallation Requirements

 






               $ INSTALL :== $SYS$SYSTEM:INSTALL/COMMAND_MODE <Return>
               $ INSTALL  <Return>
               INSTALL> REPLACE SYS$LIBRARY:DCLTABLES <Return>
               INSTALL> EXIT <Return>
               $

             The old DCL command table is in effect for those users who
             are logged in. Logged-in users who want to use the DECprint
             Utility command must log out of the system and log in again.

          __________________________________________________________

          3.3  Host and Printer Characteristics

             Make sure the following characteristics are the same on the
             printer and the host computer:

              o Baud rate

              o Data bits

              o Parity

              o Protocol















                                        Postinstallation Requirements  3-5

 





          ________________________________________________________________


          II User's Guide

             This part includes sections that describe how to use the
             DECprint Utility command to print your POSTSCRIPT files on
             ANSI/sixel printers, explain system messages and recovery
             procedures, and describe the printer environment.

 











                                                                 Chapter 4


                                        Using the DECprint Utility Command
          ________________________________________________________________


             You invoke the DECprint Utility for POSTSCRIPT to Sixel
             Printing for VMS software with the single command, PSPRINT.
             Using the DECprint Utility command is similar to using the
             DCL PRINT command. The DECprint Utility command accepts
             qualifiers specific to DECprint Utility as well as many DCL
             PRINT qualifiers. In addition, the DECprint Utility software
             processes some PRINT qualifiers differently and does not
             support others.

             This chapter discusses the following topics concerning the
             use of the DECprint Utility command:

              o The command line syntax

              o Using the command line for queued printing

              o Using the command line with printers attached to a
                terminal

              o Defining the printer type for queued and attached device
                printing

              o PRINT qualifiers supported by the DECprint Utility
                software

              o Command qualifiers specific to the DECprint Utility
                software

              o PRINT qualifiers that work differently

                                   Using the DECprint Utility Command  4-1

 






              o Unsupported DCL PRINT qualifiers

              o Submitting DECprint Utility commands for batch processing

              o Color printing with the DECprint Utility software

              o Miscellaneous helpful hints to use with the DECprint
                Utility software

          __________________________________________________________

          4.1  The Command Line

             To translate your POSTSCRIPT files for printing on a sixel
             printer, enter the DECprint Utility command as follows:

               $ PSPRINT/qualifier filename.PS[,...]

             You can print the converted sixels on either a printer
             attached to your terminal or a printer on a queue, by
             selecting the /ATTACHED or /QUEUE qualifier with the DECprint
             Utility command line. Sections 4.3 and 4.1.1 discuss other
             qualifiers supported by the DECprint Utility software.

             To print to an LJ250 Companion Color Printer on a queue, use
             the /QUEUE qualifier with the DECprint Utility command:

               $ PSPRINT/QUEUE=LJ250_queue-name fileA.ps

             For more information on using the DECprint Utility command
             with printers on queues, see Section 4.1.1.

             To print to an LJ250 Companion Color Printer attached to
             your terminal, use the /ATTACHED qualifier with the DECprint
             Utility command:

               $ PSPRINT/ATTACHED=LJ250 fileA.ps

             For more information on using the DECprint Utility command
             with printers attached to your terminal, see Section 4.1.2.

             The default file type for input files to the DECprint Utility
             command is .PS not .LIS as for the DCL PRINT command.

          4-2  Using the DECprint Utility Command

 






             The software resets the POSTSCRIPT interpreter after each
             print job.

          __________________________________________________________

          4.1.1  The DECprint Utility Command and Queued Printers

             DECprint Utility software submits print jobs for printing on
             queued printers when you include the /QUEUE qualifer on the
             command line. Without the /QUEUE or /ATTACHED qualifier, the
             default is /QUEUE=SYS$PRINT.

                                          NOTE

                 If you include both /QUEUE and /ATTACHED on the
                 command line, the DCL software generates an error
                 message.

             Section 4.3 discusses qualifiers that are specific to the
             DECprint Utility software. DECprint Utility software also
             supports several DCL PRINT qualifiers for queued printers
             by passing them through unaffected to the VMS print job
             controller. The following qualifiers take effect when the
             DECprint Utility software queues the sixel file for printing:

             /AFTER           /HOLD            /OPERATOR

             /BURST           /IDENTIFY        /PRIORITY

             /CHARACTERISTICS /JOB_COUNT       /RESTART

             /COPIES          /NAME            /TRAILER

             /FLAG            /NOTE            /USER

                              /NOTIFY



                                   Using the DECprint Utility Command  4-3

 






             In addition to passing qualifiers from the command line that
             take effect at queue time, the DECprint Utility software
             always submits the sixel file for printing with the following
             qualifiers:

              o /PASSALL and /NOFEED - ensures that the symbiont does not
                change the sixel file format.

              o /NAME - provides a recognizable filename. You can
                specify this name on the command line by using the /NAME
                qualifier. Otherwise, the DECprint Utility software uses
                the filename of the first POSTSCRIPT file in the print
                job. This behavior mimics that of DCL PRINT.

              o /DELETE - deletes the sixel file after the file has been
                printed.

             For information on the DCL PRINT command qualifiers, refer to
             the VMS DCL Dictionary.

          __________________________________________________________

          4.1.2  The DECprint Utility Command and Attached Printers

             Attached printers are printers that connect directly to the
             printer port on your video terminal through an interface
             cable. If you have not already attached your printer to the
             printer port of your terminal, Digital recommends that you
             use a queue system for printing. To create a queue for your
             printer, refer to Appendix A.

             With the /ATTACHED qualifier on the command line, the
             DECprint Utility software sets the terminal to printer
             controller mode and then sends the sixels to the terminal.
             Printer controller mode causes the sixels to be printed on
             the printer attached to the terminal printer port rather
             than displayed on the terminal screen. No output goes to
             the terminal while the terminal is in printer controller
             mode. After printing of the sixels is complete, the DECprint
             Utility software resets output to the screen.

          4-4  Using the DECprint Utility Command

 






             To ensure that no other output goes to the screen during
             printing of the sixels, the DECprint Utility software
             temporarily sets the /NOBROADCAST terminal characteristic.
             In addition, if necessary, the software sets other terminal
             characteristics during the printing process and resets them
             to their original state on successful completion of the
             printing.

                                          NOTE

                 Because /NOBROADCAST is set, the terminal does
                 not print broadcast messages when you use
                 PSPRINT/ATTACHED. These messages are lost.

             While the terminal is in printer controller mode, the
             terminal sends characters typed at the keyboard to the
             host. For most characters, the host stores the data in a
             type-ahead buffer. DCL then interprets the data when the
             DECprint Utility command activity terminates. This is not
             true for the control characters listed in Table 4-1.

             Table_4-1:__Attached_Printers_and_Control_Characters_________

             Control
             Character___Action___________________________________________

             Ctrl/O      Stops and starts the flow of sixels to the
                         printer. No announcement displays on the terminal
                         screen. (VMS normally displays "Output On" and
                         "Output Off" messages in reverse video.)

             Ctrl/Y      Terminates the DECprint Utility command and
                         returns the DCL prompt. (DECprint Utility
                         software disables normal DCL handling of Ctrl/Y.)

             Ctrl/C      Terminates the DECprint Utility command and
                         returns the DCL prompt.


                                   Using the DECprint Utility Command  4-5

 






             Table_4-1_(Cont.):__Attached_Printers_and_Control_Characters_

             Control
             Character___Action___________________________________________

             Ctrl/S and  Effect flow control. Do not use these control
             Ctrl/Q      characters as the printer or the terminal may be
             ____________handling_its_own_flow_control.___________________

             Section 4.3 discusses qualifiers that the DECprint Utility
             command supports for printing to a printer attached to the
             terminal's printer port. DCL PRINT qualifiers supported for
             attached printers are listed in Section 4.9, Table 4-5.

          __________________________________________________________

          4.2  Device Support

             To print with DECprint Utility software requires defining the
             type of printer. The method depends on whether the software
             is queuing the print job or printing to an attached printer.

             Queued printing

             For queued jobs, the DECprint Utility software translates the
             systemwide logical PSPRINT$queue_DEVICE_TYPE. The value of
             this logical must be a device type keyword from Table 3-1.
             You can send DECprint Utility jobs to the execution queue for
             the supported printer or to generic queues or to a queue with
             a logical name pointing to a generic queue. DECprint Utility
             software translates any valid queue name into execution queue
             names before reading the device type logical name.

             However, you cannot send DECprint Utility jobs to generic
             queues that point to execution queues for more than one type
             of printer; otherwise, the DECprint Utility ends the program
             and generates an error message. If an execution queue is
             not defined, the DECprint Utility also ends the program and
             generates an error message.

          4-6  Using the DECprint Utility Command

 






                                          NOTE

                 The PSPRINT$queue_DEVICE_TYPE logical must be created
                 and maintained by the system manager. Future products
                 may not support this logical.

             For more information on defining the device type logical, see
             Section 3.1.

             Attached Device Printing

             When printing to an attached printer you include the device
             type keyword as the value of the /ATTACHED qualifier on the
             DECprint Utility command line:

               $ PSPRINT/ATTACHED=device-type filename.ps

             If you use the /ATTACHED qualifier, you must include a
             device-type. See Table 3-1 for the accepted values for the
             device type keyword. For more information on the /ATTACHED
             qualifier, see Section 4.3.1.

          __________________________________________________________

          4.3  DECprint Utility Command Qualifiers

             This section describes the command qualifiers specific to
             DECprint Utility:

              o /ATTACHED=device-type

              o /[NO]LAYUP

              o /MEDIUM=keyword

              o /[NO]MESSAGES

              o /ORIENTATION=logical-orientation

                                   Using the DECprint Utility Command  4-7

 





          __________________________________________________________

          4.3.1  /ATTACHED Qualifier

             Format: /ATTACHED=device-type

             /ATTACHED indicates that the printer attached to the
             terminal's printer port receives the converted sixels for
             printing. DECprint Utility software automatically directs
             the sixels to the printer rather than to the screen. When the
             printer finishes printing the sixels, the software resets the
             output to the screen. You cannot send output to the terminal
             during the printing process.

             You must associate a device type keyword with the /ATTACHED
             qualifier to indicate the type of printer attached to your
             terminal. Table 3-1 lists the valid device type keywords.

             Only certain DCL PRINT qualifiers are valid when using the
             DECprint Utility command to print to the printer attached
             to your terminal. For a list of qualifiers you can use with
             /ATTACHED, refer to Section 4.9, Table 4-5.

             Default: /NOATTACHED

             Example:

             Example 4-1 shows a command that converts the files in
             fileA*.ps from POSTSCRIPT to sixels, and sends the resulting
             sixels to an LJ250 Companion Color printer attached to your
             terminal.









          4-8  Using the DECprint Utility Command

 






             Example 4-1:  Example with /ATTACHED
             _____________________________________________________________

             $ PSPRINT/ATTACHED=LJ250 fileA*.ps

             _____________________________________________________________

          __________________________________________________________

          4.3.2  /LAYUP Qualifier

             Format: /LAYUP=integer

             /LAYUP is a qualifier that specifies the number of logical
             pages to be printed per physical sheet of paper. The value
             integer is a number from 1 to 100. If you use this qualifier
             on the command line, you must supply a number.

             You should not apply /LAYUP to one file and not to other
             files on the DECprint Utility command line. Therefore,
             position the /LAYUP qualifier after the DECprint Utility
             command verb and before any file names.

             /LAYUP controls the use of the layup feature in POSTSCRIPT
             to sixel interpretation. It is equivalent to the Number_Up
             parameter in the existing POSTSCRIPT printers with the
             following exception:

              o Number_Up allows a value of zero; DECprint Utility
                does not. /PARAMETERS=(Number_Up=0) is the same as
                PSPRINT/NOLAYUP.

             Default: /NOLAYUP

             Example:

             The command in Example 4-2 sends fileX.ps and fileZ.ps to a
             queued printer, queue-name, and uses the /LAYUP feature to
             print both files four pages to a sheet on A-size paper (8.5 x
             11 in.) in landscape orientation.

                                   Using the DECprint Utility Command  4-9

 






             Example 4-2:  Examples with /LAYUP
             _____________________________________________________________

             $ PSPRINT/QUEUE=queue-name/LAYUP=4/ORIENTATION=landscape/MEDIUM=A -
               fileX.ps,fileZ.ps

             _____________________________________________________________

          __________________________________________________________

          4.3.3  /MEDIUM Qualifier

             Format: /MEDIUM=keyword

             /MEDIUM specifies the medium used in the printer. For keyword
             values, see Table 4-2. DECprint Utility software uses this
             value to determine the size of medium required for the sixel
             image. If you provide the /MEDIUM qualifier on the command
             line, you must supply a keyword value.

             Table_4-2:__Media_Keywords___________________________________

             Keyword_____Medium___________________________________________

             LETTER or   8.5 x 11 in. (216 x 279 mm)
             A

             A4__________210_x_297_mm_(8.3_x_11.7_in.)____________________

             You cannot mix media sizes when you use the DECprint Utility
             command as you cannot select media on the supported printers.
             Therefore, you must position the /MEDIUM qualifier after
             the DECprint Utility command verb and before any file names.
             Using mixed media generates an error message.

             Default: /MEDIUM=A



          4-10  Using the DECprint Utility Command

 






             Example:

             Example 4-3 translates fileB.ps and fileC.ps for A4-size
             paper and queues the resulting sixels for printing. The
             position of the /MEDIUM qualifier in this example guarentees
             that the qualifier applies to both files.

             Example 4-3:  Example with /MEDIUM
             _____________________________________________________________

             $ PSPRINT/QUEUE=queue_name/MEDIUM=A4 fileB.ps,fileC.ps

             _____________________________________________________________

          __________________________________________________________

          4.3.4  /MESSAGES Qualifier

             Format: /MESSAGES=keyword

             /MESSAGES specifies the destination for messages and data
             returned by the POSTSCRIPT interpreter. If you use this
             qualifier you must supply one of the following values for
             keyword:

              o TERMINAL

              o FILE

             /MESSAGES=TERMINAL sends the messages and data from the
             POSTSCRIPT interpreter to the user's terminal. When you use
             this qualifier with /ATTACHED, the DECprint Utility software
             manages the terminal so that the messages and data appear on
             the terminal and not on the printed page.

             /MESSAGES=FILE=file-name takes an additional option, the name
             of the file to create. If you do not provide the file name,
             the default for /MESSAGES=file-name is SYS$LOGIN:name.LOG,
             where name is the name of the print job provided in either of
             the following:

              o /NAME qualifier on the DECprint Utility command

                                  Using the DECprint Utility Command  4-11

 






              o Filename of the first POSTSCRIPT file translated

             Do not specify /MESSAGES=FILE=TT:; instead use
             /MESSAGES=TERMINAL.

             /NOMESSAGES specifies that the DECprint Utility create no log
             file and discard any messages from the interpreter.

             Default: /NOMESSAGES

             Examples:

             The first example in Example 4-4 shows a command that
             translates fileX.ps, queues the resulting sixel file to
             queue-name, and enters any data or messages from the
             POSTSCRIPT interpreter in a log file named fileX.log in your
             login directory.

             The second example in Example 4-4 shows a command that
             translates fileZ.ps, sends the resulting sixels to an LN03
             PLUS attached to the terminal, and creates the log file named
             messages.log in you login directory.

















          4-12  Using the DECprint Utility Command

 






             Example 4-4:  Examples with /MESSAGES
             _____________________________________________________________

             $ PSPRINT/QUEUE=queue-name/MESSAGES=FILE fileX.ps

             $ PSPRINT/ATTACHED=LN03/MESSAGES=FILE=messages fileZ.ps

             _____________________________________________________________

          __________________________________________________________

          4.3.5  /ORIENTATION Qualifier

             Format: /ORIENTATION=logical-orientation

             /ORIENTATION is a positional qualifier that declares the
             orientation of the page images in the document. DECprint
             Utility software only uses /ORIENTATION when you invoke
             LAYUP; otherwise, the utility ignores the qualifier. The
             /ORIENTATION qualifier should match the orientaion of pages
             in the input POSTSCRIPT file. If you provide this qualifier
             on the command line, logical-orientation must be one of the
             following values:

              o PORTRAIT

              o LANDSCAPE

             Default: /ORIENTATION=PORTRAIT

             Example:

             For an example using the /ORIENTATION qualifier, see
             Example 4-2.

          __________________________________________________________

          4.3.5.1  Page Orientation and /LAYUP

             When you print using /LAYUP, the aspect ratio of the page is
             preserved. This means, for example, a portrait-shaped page
             retains its portrait shape. However, because LAYUP scales
             pages to make the best use of the available space, the page
             and sheet may have different orientations.

                                  Using the DECprint Utility Command  4-13

 






             Figures 4-1 and 4-2 show the four different cases of page and
             sheet orientation with /LAYUP. Text in the first page spot
             is represented by the parallel lines. The POSTSCRIPT origin
             of the sheet and first page are represented by the quarter
             circles.

             Figure 4-1 shows how your portrait file prints with
             /LAYUP=2 and /LAYUP=4. With /LAYUP=2, the pages remain
             portrait-shaped, but you hold the sheet in landscape
             orientation to read them.

             Figure 4-2 shows how your landscape file prints with /LAYUP=2
             and /LAYUP=4. With /LAYUP=2/ORIENTATION=LANDSCAPE, the pages
             have a landscape shape, but you hold the sheet in portrait
             orientation_to_read_them.____________________________________

             _____________________________________________________________

          __________________________________________________________

          4.4  PRINT Qualifiers That Work Differently

             This section describes PRINT command qualifiers that do not
             work the same with the DECprint Utility command as they do
             with the DCL PRINT command.

          __________________________________________________________

          4.4.1  /AFTER Qualifier

             In DCL PRINT, /AFTER specifies when the printing of the
             file begins. The DECprint Utility software passes /AFTER
             to $SNDJBC. Therefore, /AFTER specifies when the printing of
             the sixels begins. Conversion from POSTSCRIPT to sixels by
             the DECprint Utility software begins immediately.

             See Section 4.6 for information on how to submit a command
             file to run DECprint Utility jobs in batch or at a later
             time.

          4-14  Using the DECprint Utility Command

 





          __________________________________________________________

          4.4.2  /PARAMETERS Qualifier

             /PARAMETERS extends the PRINT line command for existing
             POSTSCRIPT printers. DECprint Utility software uses new
             command qualifiers to provide the features of the /PARAMETERS
             qualifier (see Section 4.3). DECprint Utility software does
             not parse or interpret values specified by /PARAMETERS, but
             passes them to the VMS job controller ($SNDJBC), in case your
             symbiont reads the /PARAMETERS qualifier.

          __________________________________________________________

          4.5  Unsupported PRINT Qualifiers

             Several DCL PRINT command qualifiers do not work with the
             DECprint Utility command. If you supply these qualifiers
             on the DECprint Utility command line, you receive an error
             indicating that the qualifier is not valid when using the
             DECprint Utility command. This section describes and lists
             these qualifiers.

          __________________________________________________________

          4.5.1  Formating Qualifiers

             As the DECprint Utility software only converts and prints
             POSTSCRIPT files, it does not support the following ASCII
             text formating print qualifiers:

             /FEED       /PASSALL

             /HEADER     /SPACE






                                  Using the DECprint Utility Command  4-15

 





          __________________________________________________________

          4.5.2  File Selection Qualifiers

             DECprint Utility software does not support the following file
             selection print qualifiers:

             /BACKUP     /CONFIRM    /EXPIRED

             /BEFORE     /CREATED    /MODIFIED

             /BY_OWNER   /EXCLUDE    /SINCE

          __________________________________________________________

          4.5.3  /FORM and /SETUP Qualifiers

             The DECprint Utility does not support the following
             qualifiers that are associated with forms and setup modules.

             /FORM Qualifier

             DECprint Utility software ignores much of the form
             functionality as it submits jobs for printing with the
             /PASSALL qualifier. In addition, DECprint Utility does
             not support setup modules. For these reasons, /FORM is not
             supported.

             /SETUP Qualifier

             DECprint Utility software does not support /SETUP for the
             same reasons that it does not support /FORM. DECprint Utility
             submits jobs for printing with the /PASSALL qualifier that
             ignores much of the form functionality and does not support
             setup modules.

             If your POSTSCRIPT file requires setup modules to work
             properly, you can do either of the following:

              o Rewrite your files to be independent of setup modules,
                which increases their portability.

          4-16  Using the DECprint Utility Command

 






              o Extract the required modules into a file and include the
                name of the file on the command line.

                  $ PSPRINT/QUEUE=queue-name setup_filename.PS,myfile.PS

          __________________________________________________________

          4.5.4  Miscellaneous Qualifiers

             Miscellaneous print qualifiers that DECprint Utility software
             does not support include:

             /DELETE     /LOWERCASE

             /DEVICE     /REMOTE

             /DELETE Qualifier

             When using the DCL PRINT command, /DELETE refers to the file
             that was named in the PRINT command line. Since the DECprint
             Utility software does not know when printing completes, it
             cannot delete the original POSTSCRIPT file. You can delete
             the original POSTSCRIPT file.

             /DEVICE Qualifier

             DCL allows /DEVICE as a synonym for /QUEUE. The DECprint
             Utility does not support /DEVICE; use /QUEUE instead.

          __________________________________________________________

          4.6  Submitting DECprint Utility Commands for Batch Processing

             This section contains an example of a command file and
             the DCL command that you can use if you want to submit
             a DECprint Utility command for processing in batch or
             at a later time. The command file, Batch-PSPRINT.com, is
             supplied during the installation process in the directory
             SYS$COMMON:[SYSHLP.EXAMPLES.PSPRINT]. To use the command file
             to submit your DECprint Utility job to a batch queue, enter
             the following DCL command:

                                  Using the DECprint Utility Command  4-17

 






               $ SUBMIT /PARAMETERS=(parameter[,...]) Batch-PSPRINT

             You can include up to eight parameters with the SUBMIT
             command. These parameter values equate to the symbols named
             p1 through p8 in Batch-PSPRINT.com (see Example 4-6). Specify
             all DECprint Utility qualifiers and parameters, including
             the the POSTSCRIPT file name, in one of these parameters.
             If a parameter contains spaces, special characters, or
             lowercase letters, enclose the parameter in quotation marks.
             A parameter can have from 1 to 255 characters.

                                          NOTE

                 The batch process receives your disk and directory
                 defaults and the same resource quotas and privileges
                 that were given to your interactive process when you
                 logged in.

             Examples:

             The first command in Example 4-5 shows the DECprint Utility
             job submitted to the default batch queue SYS$BATCH for
             immediate processing. In batch, the DECprint Utility software
             converts fileA.ps and prints to a queue named lj250b.
             /queue=lj250b/notify fileA.ps can be included in a single
             parameter, as in this example, or in separate parameters, as
             in the other two examples.

             The next command in Example 4-5 shows a command that sends
             the DECprint Utility job to a selected batch queue to be
             processed after 6:30 pm today. In this case, /AFTER is the
             DCL SUBMIT/AFTER qualifier not the DECprint Utility /AFTER
             qualifier.

             The third command in Example 4-5 shows a DECprint Utility job
             involving LAYUP that is submitted to a selected batch queue
             for processing immediately.


          4-18  Using the DECprint Utility Command

 






             Example 4-5:  Examples Using the Batch-PSPRINT.com File
             _____________________________________________________________

             $ SUBMIT /PARAMETERS=("/queue=lj250b/notify fileA.ps") Batch-PSPRINT

             $ SUBMIT /PARAMETERS=("/queue=lj250b","/notify","fileB.ps")-
               /AFTER=18:30 /QUEUE=psprint_batch Batch-PSPRINT

             $ SUBMIT /PARAMETERS=("/queue=ln03s_A","/layup=4",-
               "/orientation=landscape","/medium=A","/messages=file=fileX",-
               "fileX.ps") /QUEUE=psprint_batch /NOTIFY Batch-PSPRINT

             _____________________________________________________________

             Example 4-6 shows the command procedure Batch-PSPRINT.com
             that you can use to submit your DECprint Utility job to a
             batch queue for processing. This procedure checks for the
             following:

              o A valid software license

              o DECprint Utility activity (units) on the system

             If another DECprint Utility job is active on the system, the
             command procedure waits one minute and submits your DECprint
             Utility job again. Batch-PSPRINT.com continues to check and
             process your job when the software is available.












                                  Using the DECprint Utility Command  4-19

 






          Example 4-6:  The Batch-PSPRINT Command File
          ________________________________________________________________

          $!
          $! Batch-PSPRINT.com
          $!
          $!
          $
          $ outfile := sys$scratch:batch-psprint-'f$getjpi("","pid").log
          $
          $ try_psprint:
          $
          $ on error then continue
          $ define/user sys$output 'outfile
          $ psprint 'p1 'p2 'p3 'p4 'p5 'p6 'p7 'p8
          $
          $ !
          $ ! Check the result status.
          $ ! If it isn't LICENSE-F-NOAUTH, then we exit with it.
          $ !
          $
          $ ppstatus = $status
          $ if ppstatus .ne. %x1A948AF4 then goto clean_up
          $
          $ !
          $ ! If we did exit because PSPRINT wasn't authorized, then we check to
          $ ! see if it was because there weren't enough units.
          $ !
          $
          $ open/read out 'outfile
          $ read out line
          $ read out line
          $ close out
          $ if f$extract(0, 19, line) .nes. "-LICENSE-F-EXCEEDED" then goto clean_up

          ________________________________________________________________
          Example 4-6 Cont'd on next page


          4-20  Using the DECprint Utility Command

 






          Example 4-6 (Cont.):  The Batch-PSPRINT Command File
          ________________________________________________________________
          $
          $ !
          $ ! If we exited because there weren't enough units, then we will wait for
          $ ! one minute and try again. By then, the license may have been released.
          $
          $ wait 00:01
          $ goto try_psprint

          $
          $ !
          $ ! To clean up we just have to delete the file we used to capture
          $ ! the messages.
          $ !
          $
          $ clean_up:
          $ delete 'outfile';*
          $ exit ppstatus

          ________________________________________________________________

          __________________________________________________________

          4.7  Color Printing with DECprint Utility

             DECprint Utility software converts POSTSCRIPT files with
             color information for printing on the LJ250 Companion Color
             Printer and the LA324 MultiPrinter.

             DECprint Utility software converts colors to shades of
             gray for printing on sixel printers that do not have color
             capability.

          __________________________________________________________

          4.8  Miscellaneous Helpful Hints

             This following sections contain helpful hints for use with
             the DECprint Utility.

                                  Using the DECprint Utility Command  4-21

 





          __________________________________________________________

          4.8.1  Using Transparencies with the LJ250 Companion Color

                 Printer

             To print transparencies with the LJ250 printer, you must
             first put the printer in transparency mode, as follows:

              1.Turn off power to the printer

              2.Press and hold the DEC/PCL switch on the front panel while
                pressing the power switch.

             The printer is now in transparency mode and you can submit
             your POSTSCRIPT file to the DECprint Utility software for
             printing on the LJ250 printer.

          __________________________________________________________

          4.8.2  Printing PostScript Documents From MAIL

             You can use the DECprint Utility to print POSTSCRIPT files
             received from electronic MAIL on a sixel printer. First, copy
             the POSTSCRIPT file to a file in your directory using the
             EXTRACT/NOHEAD command. Then submit the file for processing
             with the DECprint Utility command.

               MAIL> EXTRACT/NOHEAD mailfile.PS
               MAIL> EXIT

               $ PSPRINT/QUEUE=queue-name mailfile.PS

          __________________________________________________________

          4.8.3  Running the DECprint Utility in the Background

             You can free your terminal for other applications, by doing
             either of the following:

              o Run the DECprint Utility in a second session on your
                terminal

              o Submit the DECprint Utility job to a batch queue

          4-22  Using the DECprint Utility Command

 






             Before running the DECprint Utility in a second session, make
             sure your terminal is set up properly. Dual sessions on the
             VT330/VT340 video terminals require two communications cables
             or one communications cable and the Session Support Utility
             (SSU) software. The terminal server also provides dual
             sessions for your terminal. Refer to the user documentation
             for your video terminal for information on setting up dual
             sessions.

             Section 4.6 provides information on how to submit your
             DECprint Utility job to a batch queue for processing.

          __________________________________________________________

          4.8.4  Printer Margin Information

             Table 4-3 lists the top, bottom, left, and right margins, in
             inches, for the printers supported by the DECprint Utility
             software. These margins cannot be changed.

             Table_4-3:__Printer_Margins_in_Inches________________________

             Printer_Name__________Top____Bottom_Left___Right_____________

             LA75 Companion        .125   .125   .17    .32
             Printer

             LA210 Letterprinter   .125   .125   .125   .125

             LA324 MultiPrinter    .04    .04    .16    .16

             LJ250 Companion       .04    .04    .26    .16
             Color Printer

             LN03 Plus Desktop     .25    .29    .25    .25
             Laser Printer
             (A-Size)


                                  Using the DECprint Utility Command  4-23

 






             Table_4-3_(Cont.):__Printer_Margins_in_Inches________________

             Printer_Name__________Top____Bottom_Left___Right_____________

             LN03 Plus Desktop     .45    .79    .25    .25
             Laser Printer
             (A4-Size)____________________________________________________

          __________________________________________________________

          4.9  Summary of DECprint Utility Qualifiers

             This section lists the qualifiers supported by the DECprint
             Utility and provides the following information about them:

              o Type of value associated with the qualifier: integer,
                keyword, string

              o Default value of the qualifier

              o If the qualifier can be negated or not, for example
                /NOLAYUP

              o Whether the qualifier can be applied to files in a job
                (positional) or only to the job (global)

              o If the qualifier is new with the DECprint Utility command
                or is a DCL PRINT command qualifier

             Table 4-4 lists qualifiers that the DECprint Utility command
             supports for queued printing.

          Table_4-4:__DECprint_Utility_Qualifiers_________________________

                                                                  Global(G)/
          Qualifier___________Value_______Default_____Negatable___Positional(P) Source

          AFTER               date        -           Yes         G             PRINT

          4-24  Using the DECprint Utility Command

 






          Table_4-4_(Cont.):__DECprint_Utility_Qualifiers_________________

                                                                  Global(G)/
          Qualifier___________Value_______Default_____Negatable___Positional(P) Source

          ATTACHED            device      -           Yes         G             NEW
                              type

          BURST               -           -           Yes         P             PRINT

          CHARACTERISTICS     list        -           Yes         G             PRINT

          COPIES              integer     1           Yes         P             PRINT

          FLAG                keyword[1]  ALL         Yes         P             PRINT

          HOLD                -           No          Yes         G             PRINT

          IDENTIFY            -           Yes         Yes         G             PRINT

          JOB_COUNT           integer     1           Yes         G             PRINT

          LAYUP               integer     NOLAYUP     Yes         P             NEW

          MEDIUM              keyword[2]  LETTER      No          P             NEW

          MESSAGES            keyword[2]  NOMESSAGES  Yes         G             NEW

          NAME                string      -           Yes         G             PRINT

          NOTE                string      -           Yes         G             PRINT

          NOTIFY              -           NONOTIFY    Yes         G             PRINT

          ________________________________________________________________
          [1]See the VMS DCL Dictionary for supported keywords for this
          qualifier.
          [2]See Section 4.3 for supported keywords for this qualifier.

                                  Using the DECprint Utility Command  4-25

 






          Table_4-4_(Cont.):__DECprint_Utility_Qualifiers_________________

                                                                  Global(G)/
          Qualifier___________Value_______Default_____Negatable___Positional(P) Source

          OPERATOR            string      -           Yes         G             PRINT

          ORIENTATION         keyword[2]  PORTRAIT    No          P             NEW

          PAGES               integers    -           Yes         P             PRINT

          PARAMETERS          list        -           Yes         G             PRINT

          PRIORITY            integer     -           Yes         G             PRINT

          QUEUE               queue       SYS$PRINT   Yes         G             PRINT
                              name

          RESTART             -           -           Yes         G             PRINT

          TRAILER             keyword[2]  -           Yes         P             PRINT

          USER                username    -           Yes         G             PRINT
          ________________________________________________________________
          [2]See Section 4.3 for supported keywords for this qualifier.
          ________________________________________________________________

             Table 4-5 lists those qualifiers that the DECprint Utility
             command supports for printers attached to your terminal
             (/ATTACHED).

          Table_4-5:__Qualifiers_Supported_for_Attached_Printers__________

                                                                  Global(G)/

          Qualifier___________Value_______Default_____Negatable___Positional(PSource

          LAYUP               integer     -           Yes         P           NEW

          4-26  Using the DECprint Utility Command

 






          Table_4-5_(Cont.):__Qualifiers_Supported_for_Attached_Printers__

                                                                  Global(G)/

          Qualifier___________Value_______Default_____Negatable___Positional(PSource

          MEDIUM              keyword[2]  -           No          P           NEW

          MESSAGES            keyword[2]  -           Yes         G           NEW

          NAME                string      -           Yes         G           PRINT

          ORIENTATION         keyword[2]  -           No          P           NEW

          PAGES               numlist     -           Yes         P           PRINT
          ________________________________________________________________
          [2]See Section 4.3 for supported keywords for this qualifier.
          ________________________________________________________________





















                                  Using the DECprint Utility Command  4-27

 












                                                                Index
          __________________________________________________________

          ___________________________
          A                              Color extensions (Cont.)
          ___________________________      setcmykcolor operator,
          /AFTER qualifier, 4-14             C-29
          Attached printers, 4-4, 4-7      setcolorscreen operator,
            effect of control                C-31
               character during            setcolortransfer operator
               printing, 4-5                 , C-34
          /ATTACHED qualifier, 4-8         setundercolorremoval
          ___________________________
          B                                  operator, C-37
          ___________________________    colorimage operator, C-9,
          Black generation, C-5             C-18
          ___________________________      examples for, C-12
          C                              Color images, C-9
          ___________________________    Color screens, C-9
          CMYK color, C-8                Color transfer functions,
          Color extensions                  C-9
            colorimage operator, C-18    Command syntax, 4-2
            currentblackgeneration       componentids extension,
               operator, C-21               B-5, B-6
            currentcmykcolor operator    Control characters
               , C-22                      effect with attached
            currentcolorscreen               printers, 4-5
               operator, C-23            currentblackgeneration
            currentcolortransfer            operator, C-21
               operator, C-25            currentcmykcolor operator,
            currentundercolorremoval        C-22
               operator, C-26            currentcolorscreen operator
            format, C-17                    , C-23
            setblackgeneration           currentcolortransfer
               operator, C-27               operator, C-25

                                                              Index-1

 






          currentundercolorremoval       Installation Verification
             operator, C-26                 Procedure (IVP) (Cont.)
          CYMK color, C-4                  output, 2-12
          ___________________________    ___________________________
          D                              J
          ___________________________    ___________________________
          DECprint Utility               jobname operator, B-4, B-7
            system messages, 5-1         ___________________________
          DECprint Utility command       L
             line, 4-2                   ___________________________
            attached printers, 4-4       LA210 Letterprinter, 1-3,
            queued printers, 4-3            3-3
          /DELETE qualifier, 4-17        LA324 MultiPrinter, 1-3,
          Device control library,           3-3
             A-4, A-5                    LA75 Companion printer,
          /DEVICE qualifier, 4-17           1-3, 3-3
          Device support, 4-6            /LAYUP qualifier, 4-9
          ___________________________    LJ250 Companion Color
          F                                 printer, 1-3, 3-3
          ___________________________      using transparencies
          /FORM qualifier, 4-16
          ___________________________        with, 4-22
          H                              LN03 Image software
          ___________________________      installation order with
          Hardware requirements, 1-3         DECprint Utility, 1-5
          ___________________________    LN03 PLUS Desktop Laser
          I                                 printer, 1-3, 3-3
          ___________________________    Logical name
          Installation                     for queued printing, 3-1,
            hardware requirements,
               1-3                           4-6
            order with LN03 Image        ___________________________
               software, 1-5             M
            procedure messages, 5-1      ___________________________
            required disk space, 1-5     /MEDIUM qualifier, 4-10
            sample session, 2-10         Messages
            software requirements,         descriptions, 5-2  to
               1-4                           5-14
            time required, 1-5             format, 5-1
          Installation procedure           severity level, 5-2
             questions, 2-3  to 2-9      /MESSAGES qualifier, 4-11

          Installation Verification
             Procedure (IVP)

          2-Index

 





          ___________________________
          O                              Print qualifiers (Cont.)
          ___________________________      effective at queue time,
          /ORIENTATION qualifier,            4-3
             4-13                          not supported by DECprint
          ___________________________        Utility command, 4-15
          P                                specific to DECprint
          ___________________________
          pagecount operator, B-4,           Utility command, 4-7
             B-7                         Print queues, creating, A-1
          pagesize operator, B-4         /PROCESSOR qualifer, A-6
          /PARAMETERS qualifier, 4-15    product operator, B-5, B-6
          Persistent parameters, B-4     PSPRINT$queue_DEVICE_TYPE,
          Postinstallation                  3-1, 4-6
             requirements, 3-1           PSPRINT$STARTUP
            for queued printing, 3-1       editing of, A-2  to A-4
            for VAXcluster systems,        queue setup topics, A-5
               3-4                           to A-7
          POSTSCRIPT extensions, B-1       renaming, A-2
             to B-7                      ___________________________
            componentids, B-6            Q
            portability, B-1             ___________________________
            sheetcount, B-7              Qualifiers
          POSTSCRIPT operators             different from PRINT
            begin, B-4                       command, 4-14
            end, B-4                       effective at queue time,
            jobname, B-7                     4-3
            pagecount, B-7                 not supported by DECprint
            pagesize, B-4                    Utility command, 4-15
            product, B-6                   specific to DECprint
            revision, B-7                    Utility command, 4-7
            version, B-7                 Queued printing, 4-6
            where, B-2                   Queues, creating, A-1
          Printed output                 ___________________________
            IVP, 2-12                    R
          Printer startup file           ___________________________
            setting up print queues,     Release Notes, 2-2
               A-2                       revision operator, B-5, B-7
          Printer support, 1-3           ___________________________
          Print qualifiers               S
            different from PRINT         ___________________________
               command, 4-14             Separation pages, A-6
                                         setblackgeneration operator
                                            , C-27

                                                              Index-3

 





                                         ___________________________
          setcmykcolor operator, C-29    V
          setcolorscreen operator,       ___________________________
             C-31                        version operator, B-7
          setcolortransfer operator,     VMSINSTAL procedure
             C-34                          conventions, 2-1
          setundercolorremoval             installation questions,
             operator, C-37                  2-3  to 2-9
          Setup modules                    release notes, 2-2
            with DECprint Utility        Volatile parameters, B-4

               jobs, 4-16
          /SETUP qualifier, 4-16
          sheetcount operator, B-4,
             B-7
          Software requirements, 1-4
          statusdict, B-3
          Supported devices
            device type keywords for,
               3-3
            resolution of, 3-3
          System messages, 5-1  to
             5-14
          System parameters, B-4
          System startup file, A-5
          ___________________________
          T
          ___________________________
          Terminal device type, A-6
          Terminals supported
             by DECprint Utility
             software, 1-3
          Tranparency mode
            LJ250 printer, 4-22
          Troubleshooting procedures,
             D-1  to D-6
          ___________________________
          U
          ___________________________
          UNDEF error message, B-1
          Undefined name
            statusdict, B-3
            using where operator, B-2
          Undercolor removal, C-5

          4-Index

 











                                                                 Chapter 5


                                                           System Messages
          ________________________________________________________________


             This chapter contains the system messages issued by the
             DECprint Utility software and the POSTSCRIPT interpreter.
             Refer to the Guide to VAX/VMS Software Installation for
             explanations of messages issued by VMSINSTAL during product
             installation. Refer to the VMS System Messages and Recovery
             Procedures for explanations of messages issued by the DCL
             software. Refer to VMS License Management Utility Manual for
             an explanation of the the Licence Management Facility (LMF)
             messages.

          __________________________________________________________

          5.1  Message Format

             System messages issued by the DECprint Utility software have
             the following format:

               %PSPRINT-s-ident, text
               -PSPRINT-s-ident, text

             where:

             %         is the prefix to all primary messages.

             -         is the prefix to all continuation messages.


                                                      System Messages  5-1

 







             s         is the severity level of the message.

             ident     is an abbreviation of the message text.

             text      is the expanded text of the message.

          __________________________________________________________

          5.2  Severity Level

             The severity levels of DECprint Utility system messages are
             as follows:

             _____________________________________________________________
             Code_Meaning_________________________________________________

             S    Success-successful completion of the request.

             I    Informational-may or may not require user action.

             W    Warning-request may not have completed and may require
                  user action.

             E    Error-system encountered an error that may be
                  recoverable.

             F    Fatal-system encountered a fatal error and cannot
             _____continue_processing_the_request.________________________

          __________________________________________________________

          5.3  Message Descriptions

             The following message descriptions are alphabetized by the
             ident portion of the messages code. The message prefix,
             source designation, and severity code are not shown.


          5-2  System Messages

 






          BADPS, couldn't use PostScript interpreter

                           Explanation: DECprint Utility software cannot
                           access the host-based POSTSCRIPT interpreter.
                           Another message follows indicating the problem.

                           User Action: Correct the problem indicated by
                           the accompanying message.

          CREJOB, error creating job

                           Explanation: The print job could not be
                           submitted to the queue. Another message
                           accompanies this message to explain the
                           problem.

                           User Action: Correct the problem indicated by
                           the accompanying message.

          DICTFULL, dictfull: No more room in dictionary - offending
             command is string

                           Explanation: The POSTSCRIPT interpreter sensed
                           an error while trying to execute the POSTSCRIPT
                           command represented by string.

                           User Action: Either the POSTSCRIPT file or the
                           application that generated the POSTSCRIPT file
                           is in error. If the application is supplied by
                           Digital, submit a Software Performance Report
                           (SPR).

          DICTSTKOV, dictstackoverflow: Too many begins

                           Explanation: The POSTSCRIPT interpreter sensed
                           too many begins without corresponding ends.

                           User Action: Either the POSTSCRIPT file or the
                           application that generated the POSTSCRIPT file
                           is in error. If the application is supplied by
                           Digital, submit a Software Performance Report
                           (SPR).

                                                      System Messages  5-3

 






          DICTSTKUF, dictstackunderflow: Too many ends

                           Explanation: The POSTSCRIPT interpreter sensed
                           too many ends without corresponding begins.

                           User Action: Either the POSTSCRIPT file or the
                           application that generated the POSTSCRIPT file
                           is in error. If the application is supplied by
                           Digital, submit a Software Performance Report
                           (SPR).

          EXECSTKOV, execstackoverflow: Exec nesting is too deep -
             offending command is string

                           Explanation: The POSTSCRIPT interpreter sensed
                           an error while trying to execute the POSTSCRIPT
                           command represented by string.

                           User Action: Either the POSTSCRIPT file or the
                           application that generated the POSTSCRIPT file
                           is in error. If the application is supplied by
                           Digital, submit a Software Performance Report
                           (SPR).

          FLUSHING, rest of job will be ignored

                           Explanation: An error or some other event has
                           occurred that is causing POSTSCRIPT to ignore
                           the rest of the job. One or more messages
                           preceding this one should provide information
                           on why the job is being flushed.

                           User Action: Check the other messages that
                           accompanied this one.





          5-4  System Messages

 






          INTERNERR, internal error code; submit an SPR

                           Explanation: A fatal error has occurred. The
                           code pinpoints the location of the problem.

                           User Action: Submit a Software Performance
                           Report (SPR) that includes details of the
                           situation under which the message occurred.

          INCQUETYUP, inconsistent queue type

                           Explanation: The queue specified with /QUEUE is
                           not suitable for printing. (Specifying a batch
                           queue will give this message.)

                           User Action: Provide a valid name for the
                           /QUEUE qualifier and re-enter your DECprint
                           Utility command.

          INTERUPT, interrupt: The job has been interrupted

                           Explanation: The POSTSCRIPT interpreter sensed
                           an external request to interrupt the POSTSCRIPT
                           program. This message also appears as part of
                           the Abort process.

                           User Action: None. This message is a
                           confirmation of a requested action.

          INVACC, invalidaccess: Attempt to access restricted object or
             capability - offending command is string

                           Explanation: The POSTSCRIPT interpreter sensed
                           an error while trying to execute the POSTSCRIPT
                           command represented by string.

                           User Action: Either the POSTSCRIPT file or the
                           application that generated the POSTSCRIPT file
                           is in error. If the application is supplied by
                           Digital, submit a Software Performance Report
                           (SPR).

                                                      System Messages  5-5

 






          INVEXIT, invalidexit: Exit not in loop - offending command is
             string

                           Explanation: The POSTSCRIPT interpreter sensed
                           an error while trying to execute the POSTSCRIPT
                           command represented by string.

                           User Action: Either the POSTSCRIPT file or the
                           application that generated the POSTSCRIPT file
                           is in error. If the application is supplied by
                           Digital, submit a Software Performance Report
                           (SPR).

          INVFILACC, invalidfileaccess: Bad file access string - offending
             command is string

                           Explanation: The POSTSCRIPT interpreter sensed
                           an error while trying to execute the POSTSCRIPT
                           command represented by string.

                           User Action: Either the POSTSCRIPT file or the
                           application that generated the POSTSCRIPT file
                           is in error. If the application is supplied by
                           Digital, submit a Software Performance Report
                           (SPR).

          INVFONT, invalidfont: Bad font name or dictionary - offending
             command is string

                           Explanation: The POSTSCRIPT interpreter sensed
                           an error while trying to execute the POSTSCRIPT
                           command represented by string.

                           User Action: Either the POSTSCRIPT file or the
                           application that generated the POSTSCRIPT file
                           is in error. If the application is supplied by
                           Digital, submit a Software Performance Report
                           (SPR).

          5-6  System Messages

 






          INVLOGFIL, invalid log file specification

                           Explanation: The file name you gave for
                           /MESSAGES=file is not a valid log file
                           specification. An additional message provides
                           an explanation of the problem.

                           User Action: Perform the action suggested by
                           the message indicating the problem, which could
                           be correcting the spelling of a disk name, for
                           example.

          INVREST, invalidrestore: Improper restore - offending command is
             string

                           Explanation: The POSTSCRIPT interpreter sensed
                           an error while trying to execute the POSTSCRIPT
                           command represented by string.

                           User Action: Either the POSTSCRIPT file or the
                           application that generated the POSTSCRIPT file
                           is in error. If the application is supplied by
                           Digital, submit a Software Performance Report
                           (SPR).

          IOERROR, ioerror: System I/O error occurred - offending command
             is string

                           Explanation: The POSTSCRIPT interpreter sensed
                           an error while trying to execute the POSTSCRIPT
                           command represented by string.

                           User Action: Either the POSTSCRIPT file or the
                           application that generated the POSTSCRIPT file
                           is in error. If the application is supplied by
                           Digital, submit a Software Performance Report
                           (SPR).


                                                      System Messages  5-7

 






          LIMCHK, limitcheck: Implementation limit exceeded - offending
             command is string

                           Explanation: The POSTSCRIPT interpreter sensed
                           an execute the POSTSCRIPT command represented
                           by string.

                           User Action: Either the POSTSCRIPT file or the
                           application that generated the POSTSCRIPT file
                           is in error. If the application is supplied by
                           Digital, submit a Software Performance Report
                           (SPR).

          NODEVTYPE, couldn't determine device type for queue

                           Explanation: DECprint Utility software could
                           not determine the device type. The device type
                           logical is not defined.

                           User Action: Define the
                           PSPRINT$queue_DEVICE_TYPE logical for queued
                           printing jobs. See Section 3.1 for information
                           on how to define this logical.

          NOCURPT, nocurrentpoint: Path is empty - offending command is
             string

                           Explanation: The POSTSCRIPT interpreter sensed
                           an error while trying to execute the POSTSCRIPT
                           command represented by string.

                           User Action: Either the POSTSCRIPT file or the
                           application that generated the POSTSCRIPT file
                           is in error. If the application is supplied by
                           Digital, submit a Software Performance Report
                           (SPR).



          5-8  System Messages

 






          NOLOCMED, /MEDIUM must be used globally

                           Explanation: /MEDIUM should only be used
                           globally, that is, after the DECprint Utility
                           command verb and before any files.

                           User Action: Place /MEDIUM after the command
                           verb and before the file names. Then enter your
                           command again.

          NOMIXDEV, all execution queues must have the same device type

                           Explanation: You specified a generic queue
                           that points to execution queues with different
                           device types.

                           User Action: Specify an execution queue or a
                           generic queue that points to execution queues
                           that have the same device type. Enter your
                           command again.

          NOPRINTER, /ATTACHED requires the terminal characteristic
             Printer Port

                           Explanation: Set terminal characterics do not
                           indicate that the terminal has an attached
                           printer. The DECprint Utility software requires
                           this.

                           User Action: Perform the SET
                           TERMINAL/PRINTER_PORT command and resubmit
                           your print job.

          NOTATTY, device TT: is not an available terminal

                           Explanation: The TT device is not a terminal or
                           is not available. PSPRINT/ATTACHED only sends
                           output to a terminal device.

                           User Action: Use the DECprint Utility /ATTACHED
                           qualifier only from a normal DCL session.

                                                      System Messages  5-9

 






          OPENIN, error opening filename for reading

                           Explanation: For some reason, one of the
                           POSTSCRIPT files could not be opened. Other
                           messages accompany this error message to
                           explain the problem.

                           User Action: Make corrections suggested by the
                           accompanying messages.

          RANGECHK, rangecheck: Argument out of bounds - offending command
             is string

                           Explanation: The POSTSCRIPT interpreter sensed
                           an error while trying to execute the POSTSCRIPT
                           command represented by string.

                           User Action: Either the POSTSCRIPT file or the
                           application that generated the POSTSCRIPT file
                           is in error. If the application is supplied by
                           Digital, submit a Software Performance Report
                           (SPR).

          STKOFLO, stackoverflow: Operand stack overflow - offending
             command is string

                           Explanation: The POSTSCRIPT interpreter sensed
                           an error while trying to execute the POSTSCRIPT
                           command represented by string.

                           User Action: Either the POSTSCRIPT file or the
                           application that generated the POSTSCRIPT file
                           is in error. If the application is supplied by
                           Digital, submit a Software Performance Report
                           (SPR).




          5-10  System Messages

 






          STKUFLO, stackunderflow: Operand stack underflow - offending
             command is string

                           Explanation: The POSTSCRIPT interpreter sensed
                           an error while trying to execute the POSTSCRIPT
                           command represented by string.

                           User Action: Either the POSTSCRIPT file or the
                           application that generated the POSTSCRIPT file
                           is in error. If the application is supplied by
                           Digital, submit a Software Performance Report
                           (SPR).

          SYNERR, syntaxerror: Input ended in string or procedure body -
             offending command is string

                           Explanation: The POSTSCRIPT interpreter sensed
                           an error while trying to execute the POSTSCRIPT
                           command represented by string.

                           User Action: Either the POSTSCRIPT file or the
                           application that generated the POSTSCRIPT file
                           is in error. If the application is supplied by
                           Digital, submit a Software Performance Report
                           (SPR).

          TOOCOMPLEX, print job too complex

                           Explanation: You have exceeded the number of
                           qualifiers (or values for qualifiers) allowed
                           on the DECprint Utility command line.

                           User Action: Simplify your print job. Submit
                           it again with fewer qualifiers (or values for
                           qualifiers) on the command line.




                                                     System Messages  5-11

 






          TYPCHK, typecheck: Argument of wrong type - offending command is
             string

                           Explanation: The POSTSCRIPT interpreter sensed
                           an error while trying to execute the POSTSCRIPT
                           command represented by string.

                           User Action: Either the POSTSCRIPT file or the
                           application that generated the POSTSCRIPT file
                           is in error. If the application is supplied by
                           Digital, submit a Software Performance Report
                           (SPR).

          UNDEF, undefined: Name not known - offending command is string

                           Explanation: The POSTSCRIPT interpreter sensed
                           an error while trying to execute the POSTSCRIPT
                           command represented by string.

                           User Action: Either the POSTSCRIPT file or the
                           application that generated the POSTSCRIPT file
                           is in error). If the application is supplied by
                           Digital, submit a Software Performance Report
                           (SPR).

          UNDEFRES, undefinedresult: Number overflow or underflow -
             offending command is string

                           Explanation: The POSTSCRIPT interpreter sensed
                           an error while trying to execute the POSTSCRIPT
                           command represented by string.

                           User Action: Either the POSTSCRIPT file or the
                           application that generated the POSTSCRIPT file
                           is in error. If the application is supplied by
                           Digital, submit a Software Performance Report
                           (SPR).


          5-12  System Messages

 






          UNDFILNAM, undefinedfilename: File not found - offending command
             is string

                           Explanation: The POSTSCRIPT interpreter sensed
                           an error while trying to execute the POSTSCRIPT
                           command represented by string.

                           User Action: Either the POSTSCRIPT file or the
                           application that generated the POSTSCRIPT file
                           is in error. If the application is supplied by
                           Digital, submit a Software Performance Report
                           (SPR).

          UNMATCH, unmatchedmark: Expected mark not on stack - offending
             command is string

                           Explanation: The POSTSCRIPT interpreter sensed
                           an error while trying to execute the POSTSCRIPT
                           command represented by string.

                           User Action: Either the POSTSCRIPT file or the
                           application that generated the POSTSCRIPT file
                           is in error. If the application is supplied by
                           Digital, submit a Software Performance Report
                           (SPR).

          UNRECDEV, unrecognized device type: device

                           Explanation: You selected a device type for
                           the printer that is not recognized by the
                           DECprint Utility. Either the device type
                           with the /ATTACHED qualifier is not valid
                           or the device type value in the logical
                           PSPRINT$queue_DEVICE_TYPE is not correct.

                           User Action: Check the /ATTACHED=device-type
                           qualifier to make sure it is valid for the
                           DECprint Utility command. Check that the
                           PS$PRINTqueue_DEVICE_TYPE logical is defined
                           correctly. Refer to Table 3-1. Then resubmit
                           your file with the DECprint Utility command.

                                                     System Messages  5-13

 






          UNREGIST, unregistered: PostScript has encountered a system
             error - offending command is string

                           Explanation: The POSTSCRIPT interpreter sensed
                           an error while trying to execute the POSTSCRIPT
                           command represented by string.

                           User Action: Either the POSTSCRIPT file or the
                           application that generated the POSTSCRIPT file
                           is in error. If the application is supplied by
                           Digital, submit a Software Performance Report
                           (SPR).

          VMERROR, vmerror: PostScript virtual memory exhausted -
             offending command is string

                           Explanation: The POSTSCRIPT interpreter sensed
                           an error while trying to execute the POSTSCRIPT
                           command represented by string.

                           User Action: Either the POSTSCRIPT file or the
                           application that generated the POSTSCRIPT file
                           is in error. If the application is supplied by
                           Digital, submit a Software Performance Report
                           (SPR).














          5-14  System Messages

 











                                                                Appendix A


                           Creating a Print Queue for the DECprint Utility
          ________________________________________________________________


             This appendix discusses how to set up print queues using
             the four optional files that are included with the DECprint
             Utility installation kit. These files include a startup
             command file, PSPRINT$STARTUP.TEMPLATE, and three command
             files that are invoked by this startup file. Together they
             set up and start your print queues.

             If you already have print queues set up, you only need to
             define the device type logical (see Section 3.1). DECprint
             Utility software does not require that you use these
             command file to set up your print queue. These command
             files are provided for those system managers who would
             like help setting up print queues. Therefore, if you do
             not have print queues, you may want to use the command file
             SYS$STARTUP:PSPRINT$STARTUP.TEMPLATE.

                                          NOTE

                 Running the PSPRINT$STARTUP command file on queues
                 not created with this command file may not produce the
                 desired result.

             The following operations affect system files and should
             be performed by a system manager or cluster manager.
             These procedures include renaming and editing the
             SYS$STARTUP:PSPRINT$STARTUP.TEMPLATE and updating the system

                      Creating a Print Queue for the DECprint Utility  A-1

 






             startup file. This appendix also discusses behaviors specific
             to use of PSPRINT$STARTUP.COM to start your print queues.

          __________________________________________________________

          A.1  Renaming and Editing the Printer Startup Command File

             The DECprint Utility, Version 1.0 provides an
             optional template for a printer startup file,
             SYS$STARTUP:PSPRINT$STARTUP.TEMPLATE. If you wish to use this
             command file to set up your print queues, you must rename
             the file, edit the file to reflect your own queue structure,
             and add a command to execute the command file in the system
             startup file.

          __________________________________________________________

          A.1.1  Renaming the Startup File

             Rename the printer startup template file using the COPY
             command as follows:

               $ SET DEFAULT SYS$COMMON:[SYS$STARTUP]
               $ COPY PSPRINT$STARTUP.TEMPLATE PSPRINT$STARTUP.COM

          __________________________________________________________

          A.1.2  Editing the Startup File

             This section includes portions of text from the printer
             startup command file. Text after an exclamation mark (!)
             to the end of the line denotes a comment that the startup
             procedure does not execute. Following this example and
             the instructions provided in PSPRINT$STARTUP.COM, use an
             editor of your choice and edit the file to meet your printing
             requirements.



          A-2  Creating a Print Queue for the DECprint Utility

 






             Sample Queue Structure

             PSPRINT$STARTUP provides a sample queue structure that
             includes commands to setup an execution queue on device
             TXA%%. Modify these commands or add commands to meet your
             requirements. Example A-1 shows the command that provides
             parameters to set up an execution queue:

             Example A-1:  Sample Execution Queue
             _____________________________________________________________

             $
             $!+----------
             $! Enter your queue structure below this line
             $!----------
             $
             $! Here is a sample queue structure for one execution queue on device
             $! TXA0:  Modify these commands and add additional ones to reflect
             $! your desired queue structure.
             $
             $ on error then continue
             $ @sys$startup:PSPRINT$execution_queue -
            1      PSPRINT  -                    ! P1 - Execution queue name
            2      txa%% -                       ! P2 - Device name
            3      "" -                          ! P3 - Device control library
            4      LJ250 -                       ! P4 - Printer device type
            5      "" -                          ! P5 - Default queue qualifiers
            6      "" -                          ! P6 - Communication speed
            7      ""                            ! P7 - Device characteristics
             $
             $ exit

             _____________________________________________________________

             @SYS$STARTUP:PSPRINT$EXECUTION_QUEUE executes the file
             PSPRINT$execution_queue.com. This file uses the following
             parameters from Example A-1 to set up your execution queue:

              1 Parameter p1 PSPRINT is the queue name. Substitute the
                name of your execution queue.

                      Creating a Print Queue for the DECprint Utility  A-3

 






              2 Parameter p2 txa%% is name of the device that drives the
                execution queue. This parameter is used with the /ON
                qualifier of the INITIALIZE/QUEUE command. Substitute
                the name of the device that drives your execution queue.
                TXA%% is not a valid name. For example:

                 o txa0 - for an LJ250 on a serial line

                 o lta1 - for an LJ250 on a DECserver port

                 o foo::txa4 - for an LJ250 on TXA4 on node FOO in a
                   cluster

              3 Parameter p3 "" indicates that no device control library
                is associated with the queue. The DECprint Utility does
                not require a device control library. However, you may
                want to associate a device control library with the queue,
                if you plan to use a DECprint Utility queue for other ANSI
                printing tasks.

              4 Parameter p4 LJ250 is the printer device type for the
                queue. Edit to include the device type for your printer.

              5 Parameter p5 "" selects no default qualifiers for the
                queue. Use this parameter to override or specify other
                qualifiers to the INITIALIZE/QUEUE command.

              6 Parameter p6 "" selects the default communications
                speed of 9600 BAUD. This parameter has no effect for LAT
                devices.

              7 Parameter p7 "" selects no additional device
                characteristics for the queue. If you want
                the device spooled, replace the "" in p7 with
                "/SPOOL=(PSPRINT,disk-name)".




          A-4  Creating a Print Queue for the DECprint Utility

 





          __________________________________________________________

          A.2  Updating the System Startup File

             To update the system startup file:

             Edit the SYS$COMMON:[SYSMGR]SYSTARTUP_V5.COM file and check
             for the following command procedure call:

               $ @SYS$STARTUP:PSPRINT$STARTUP

             If this line is not present, insert it.

                                          NOTE

                 If your printer is configured on a DECserver in a
                 local area Ethernet, execute PSPRINT$STARTUP.COM after
                 LTLOAD.COM.

          __________________________________________________________

          A.3  PSPRINT$STARTUP Queue Setup Topics

             This section discusses how using the PSPRINT$STARTUP command
             file differs from standard queue initialization procedures.

          __________________________________________________________

          A.3.1  Device Control Library

             PSPRINT$STARTUP.COM does not associate a device control
             library with the DECprint Utility queue. DECprint Utility
             printing does not require a device control library. However,
             if you plan to use the DECprint Utility queue for other ANSI
             printing tasks, you may want to associate a device control
             library with the queue. To do this, add the device control
             library name to p3 in the execution queue definition in
             PSPRINT$STARTUP.COM.


                      Creating a Print Queue for the DECprint Utility  A-5

 





          __________________________________________________________

          A.3.2  Terminal Device Type

             PSPRINT$STARTUP.COM sets the terminal device type to unknown.
             This ensures that the command file is more robust and printer
             independent. Some of the printer device types supported by
             the DECprint Utility software are unknown to the VMS terminal
             driver.

          __________________________________________________________

          A.3.3  Separation Pages

             PSPRINT$STARTUP.COM initializes the queues with only the job
             flag page, instead of burst and trailer pages. If you want to
             print transparencies on an LJ250 printer or if your printer
             uses cut sheet media, you may want to disable all job and
             file separation pages.

             Do not use file separation pages.

          __________________________________________________________

          A.3.4  /PROCESSOR Qualifier

             The PSPRINT$EXECUTION_QUEUE.COM, invoked by
             PSPRINT$STARTUP.COM, selects the setting of the /PROCESSOR
             qualifier as follows:

              o PRTSMB - if the device is a serial line communications
                card

              o LATSYM - if the device is a local area transport (LAT)
                port

             PSPRINT$EXECUTION_QUEUE.COM can only determine this on the
             CPU where the symbiont is running. In a cluster, a processor
             is only initialized on a node that is running the symbiont.

          A-6  Creating a Print Queue for the DECprint Utility

 






             For queue characteristics to be correct, that is, for the
             right processor to be selected:

              o The node that runs the symbiont must boot and run the
                startup file.

             PSPRINT$EXECUTION_QUEUE.COM does not select the processor in
             the following instances:

              o The device does not exist. PSPRINT$EXECUTION_QUEUE.COM
                assumes that no information exists to determine which
                symbiont to use.

              o The device is already allocated.
                PSPRINT$EXECUTION_QUEUE.COM assumes that the queue is
                started and the processor already selected.























                      Creating a Print Queue for the DECprint Utility  A-7

 











                                                                Appendix B


                                            PostScript Language Extensions
          ________________________________________________________________


             Every POSTSCRIPT device has features that do not apply,
             or apply differently, to other POSTSCRIPT devices. For
             example, not all devices can select different media sizes.
             In addition, system parameters, such as a system password
             and timeout values, may not apply or may apply differently to
             various devices.

             Extensions to the POSTSCRIPT language allow you to take
             advantage of the unique features of your device. This
             appendix describes the POSTSCRIPT extension operators
             used with DECprint Utility software. For information on
             the standard POSTSCRIPT operators, refer to the POSTSCRIPT
             Language Reference Manual.

             The DECprint Utility software does not support all extension
             operators described for Digital POSTSCRIPT devices. If you
             try to use an extension that the DECprint Utility software
             does not have, POSTSCRIPT returns an UNDEF error. If the
             undefined name is an extension operator, and if ignoring
             the extension operator does no harm, then you can do the
             following to successfully convert and print your file:

              1.Create a POSTSCRIPT file that defines the unknown
                extension operator.



                                       PostScript Language Extensions  B-1

 






                In some cases, the undefined extension operators have
                operands. The procedure must remove (pop) the operands
                from the stack. Examine the file causing the problem to
                determine the correct number of pops. For example, letter
                does not take an operand. For letter, create a POSTSCRIPT
                file that contains the following line:

                  /letter {} def

                For example, operator setjobtimeout takes one operand. To
                define setjobtimeout, create a POSTSCRIPT file with the
                following line:

                  /setjobtimeout {pop} def

                For example, operator setdefaulttimeouts takes three
                operands. To define setdefaulttimeouts, create a
                POSTSCRIPT file that contains the following line:

                  /setdefaulttimeout {pop pop pop} def

              2.Name this file on the DECprint Utility command line before
                the POSTSCRIPT file causing the UNDEF error. For example,
                if you named the file letter.ps and the file causing the
                error is named fileE.ps, then enter the following command:

                  $ PSPRINT/QUEUE=lj250_b letter.ps, fileE.ps

             As shown in Example B-1, you can use the where operator to
             determine if a name is defined. (See the POSTSCRIPT Language
             Reference Manual for information about where.)








          B-2  PostScript Language Extensions

 






             Example B-1:  Determining Whether a Name Is Defined
             _____________________________________________________________

             % Check whether the name 'setduplexmode' is defined.

             statusdict begin
                   /setduplexmode where
                   {                % yes, it's defined

                       pop          % discard the dictionary returned by where.

                                    % ...use setduplexmode...
                      }

                   {                % no, it's not defined

                                    % ...do something else...
                      }

                   ifelse
                   end

             _____________________________________________________________

             This describes the Digital POSTSCRIPT extensions required
             to specify the POSTSCRIPT model used by the DECprint Utility
             software. For more information on Digital POSTSCRIPT language
             extensions, refer to the Programmer's Supplement: POSTSCRIPT
             Printers.

          __________________________________________________________

          B.1  Using PostScript Extensions

             POSTSCRIPT stores all system-specific extensions in a
             dictionary named statusdict. This dictionary contains objects
             that constitute the POSTSCRIPT extensions for each Digital
             POSTSCRIPT device. By comparison, the systemdict and userdict
             dictionaries contain only the standard POSTSCRIPT operator
             and procedure definitions.

                                       PostScript Language Extensions  B-3

 






             To use a POSTSCRIPT extension, you must explicitly access
             statusdict. As shown in Example B-2, you execute statusdict
             begin to push statusdict on the dictionary stack. Until
             POSTSCRIPT consumes the matching end operator, you can
             directly execute the objects defined in statusdict.

             Example B-2:  Accessing Extensions Located in statusdict
             _____________________________________________________________

             statusdict begin
             a3tray               %  Digital-specific operator
             .
             .
             .
             end

             _____________________________________________________________

             Like standard POSTSCRIPT operators, some extension operators
             take an operand. Others return a result. Some extensions
             neither take an operand nor return a result. (For information
             on the syntax of extension operators see the Programmer's
             Supplement: POSTSCRIPT Printers.)

          __________________________________________________________

          B.2  Persistent and Volatile Parameters

             There are two kinds of system parameters: persistent and
             volatile. Persistent parameter values persist even after the
             host-based POSTSCRIPT interpreter has been reset. Persistent
             values for the DECprint Utility software are constants; they
             cannot be modified. Table B-1 lists persistent parameters
             specific to the DECprint Utility software and shows the
             Digital-specific operators and values used to access them.




          B-4  PostScript Language Extensions

 






             Table_B-1:__Persistent_Parameters____________________________

             Parameter____________Operator_or_Value_______________________

             Identification       componentids, revision

             Name_of_product______product_(string)________________________

             Volatile parameters, on the other hand, remain in effect only
             during the execution of a single job. When a job completes,
             volatile parameters revert to the values in effect before the
             job began. Table B-2 lists the volatile parameters for the
             DECprint Utility software and the Digital-specific operators
             used to access them.

             Table_B-2:__Volatile_Parameters______________________________

             Parameter____________Operator_or_Value_______________________

             Page count           pagecount, sheetcount

             Paper size and load  papersize
             direction

             Name_of_current_job__jobname_________________________________

          __________________________________________________________

          B.3  Identification Extensions

             Some POSTSCRIPT extensions identify the type of device you
             are using. These extenions are used for information only.
             You should not use them as a basis for decision-making in
             POSTSCRIPT code, as the code is then device-dependent.





                                       PostScript Language Extensions  B-5

 





          __________________________________________________________

          B.3.1  Product

             The name product is defined in statusdict. The product
             name identifies the product as a whole, not its specific
             capabilities.

             The value returned by product depends on the type of printer
             you use. The value is the string PSprint/printer, where
             printer is one of the following keywords:

              o LA75

              o LA210

              o LA324

              o LA324 Color

              o LJ250

              o LN03

             For example, when you print to an LJ250 Companion Color
             printer, the value of product is PSprint/LJ250.

             You should not change the value of product from the name
             Digital provides with the device.

          __________________________________________________________

          B.3.2  Device Components

             The componentids extension returns a list of the components
             of the device. For the DECprint Utility software,
             componentids returns a single item, other than the mark -
             a string that indicates the version number of the host-based
             POSTSCRIPT interpreter.

          B-6  PostScript Language Extensions

 





          __________________________________________________________

          B.3.3  Version

             The version operator identifies the version of the base
             portion of the POSTSCRIPT interpreter in your device. This is
             a standard POSTSCRIPT operator.

          __________________________________________________________

          B.3.4  Revision

             The name revision is defined in statusdict. It identifies the
             revision of the device-dependent portion of the POSTSCRIPT
             interpreter in your device.

          __________________________________________________________

          B.3.5  Job Name

             The current job name is a string that appears as part of all
             status responses generated during a print job. By default,
             the value is a null string. Your POSTSCRIPT program can set
             the job name by associating it with jobname in statusdict.

          __________________________________________________________

          B.4  Pagecount and Sheetcount Operators

             The origin for the value of the pagecount operator is the
             first page imaged by the current invocation of the DECprint
             Utility command. This operator counts each imaged side of a
             sheet as one page. So when you image multiple pages on one
             side of a sheet, the value returned by pagecount increases
             by 1. The pagecount counter is reset at the end of every
             DECprint Utility job.

             The sheetcount operator also starts its count at the first
             sheet imaged and returns the number of sheets imaged by the
             current DECprint Utility command.

                                       PostScript Language Extensions  B-7

 











                                                                Appendix C


                              Color Extensions for the PostScript Language
          ________________________________________________________________


             Appendix C contains the information presented by Abode in
             POSTSCRIPT Language Color Extensions, October 1988. The
             text has been reformatted for processing with VAX DOCUMENT,
             Version 1.2.

             For information on the standard POSTSCRIPT operators, refer
             to the POSTSCRIPT Language Reference Manual. See Appendix B
             for POSTSCRIPT language extensions that apply to the DECprint
             Utility.

          __________________________________________________________

          C.1  About the PostScript Language Color Extensions

             The POSTSCRIPT language has been extended to provide
             more complete color functionality. This includes
             cyan-magenta-yellow-black (CMYK) color specification, black
             generation and undercolor removal functions, screen and
             transfer functions for four separate color components, and
             extension of the image concept to a colorimage operator that
             accepts multiple color components.






                         Color Extensions for the PostScript Language  C-1

 





          __________________________________________________________

          C.2  About this Appendix

             This appendix describes the extensions to the POSTSCRIPT
             language that support new color functionality, and it
             provides detailed information on the associated color
             operators. The third section is a general introduction to
             color functionality in the POSTSCRIPT language. The fourth
             section discusses the extended color capabilities of the
             POSTSCRIPT language. The fifth section is an alphabetical
             listing of descriptions for all color operators that have
             been added to the POSTSCRIPT language.

          __________________________________________________________

          C.3  Introduction

             The earlier versions of the POSTSCRIPT language support color
             using the setrgbcolor and sethsbcolor operators, which enable
             the POSTSCRIPT interpreter to paint filled regions, strokes,
             image masks, and characters in color. On black-and-white
             machines, these operators generate an equivalent gray shade,
             which is printed or displayed.

             To support color more fully, the POSTSCRIPT language has been
             extended to provide the following functions:

              o Most significantly, multiple color images: the colorimage
                operator renders a multiple color image; it functions
                analogously to the image operator, but uses red-green-blue
                (RGB) or cyan-magenta-yellow-black (CMYK) color input and
                generates full-color output.

              o Halftone screen definitions: the setcolorscreen operator
                specifies halftone screen definitions for red, green,
                blue, and gray, or cyan, magenta, yellow, and black
                concurrently; it is the logical expansion of setscreen
                as it takes the same three arguments to define each screen
                for each printing ink.

          C-2  Color Extensions for the PostScript Language

 






              o Color correction: the setcolortransfer operator sets the
                transfer function parameters for red, green, blue, and
                gray; it is an expansion of settransfer to four color
                components. The setblackgeneration operator provides
                a black generation function that establishes a black
                component from a cyan, magenta, and yellow specification.
                The setundercolorremoval operator provides undercolor
                removal from the cyan, magenta, and yellow components
                to compensate for the addition of black by the black
                generation function.

              o CMYK color specification: the setcmykcolor operator allows
                the user to set the current color in the graphics state to
                a cyan-magenta-yellow-black color directly, bypassing the
                color correction operators.

             The POSTSCRIPT language supports one-color, three-color,
             and four-color output devices. The color devices can be
             binary (one-bit-per-pixel per color component) or gray-scale
             (multiple-bits-per-pixel per color component, representing
             a range of intensities of each color component). A binary
             device uses halftoning to produce intermediate shades of its
             color components. If a device has eight-bits-per-pixel per
             component, it is called a full gray-scale device, and uses no
             halftoning. Devices with more than one and fewer than eight
             bits per pixel use a combination of built-in intensities
             and halftoning to produce the full range of desired shades
             of their color components. Three-color devices may be
             either red-green-blue (RGB), typically for displays and
             film recorders, or cyan-magenta-yellow (CMY) for printers.
             Four-color devices are cyan-magenta-yellow-black (CMYK) for
             color printers and color separation making devices.

             The color operators described in this document are available
             in two forms. New versions of the POSTSCRIPT interpreter
             have these operators built in. For older versions of the
             POSTSCRIPT interpreter, a package of POSTSCRIPT language
             programs that emulate these operators will be available.

                         Color Extensions for the PostScript Language  C-3

 





          __________________________________________________________

          C.4  New Features

             The color extensions to the POSTSCRIPT language include CMYK
             color specification, black generation, and undercolor removal
             for tunable conversion from RGB to CMYK color specification,
             and operators that expand the scope of screens, transfer
             functions, and images to full color input and output. These
             new color features are described conceptually in the sections
             below.

          __________________________________________________________

          C.4.1  CMYK Color Specification

             Colors are formed either by adding light to black or by
             subtracting light from white. Computer displays and film
             recorders typically add colors, while printing inks typically
             subtract colors. These two methods for forming colors give
             rise to the two major complementary color specifications,
             the additive RGB specification and the subtractive CMYK
             specification.

             Accordingly, a color component in these specifications either
             indicates the amount of light it reflects or the amount of
             light it absorbs. Each one of three standard printing process
             colors, cyan, magenta, and yellow, absorb one of the standard
             light components, red, green, and blue, respectively.
             Black, a fourth standard printing process color, absorbs
             all components of light. In the red-green-blue (RGB) color
             specification, each of its red, green, and blue components is
             associated with a real number between 0.0 and 1.0, inclusive,
             where 0.0 represents dark (no light) and 1.0 represents
             full light. In the cyan-magenta-yellow-black (CMYK) color
             specification, each of the four components are associated
             with real numbers between 0.0 and 1.0 inclusive, where 0.0
             represents full light (no ink), and 1.0 represents dark (full
             ink).

          C-4  Color Extensions for the PostScript Language

 






             The following equations demonstrate the relationship between
             the RGB and CMYK color specifications. Since cyan is the
             absence of red light,

                cyan =1.0-red.

             Similarly,

                magenta =1.0-green

             and

                yellow =1.0-blue,

             so that a color that is 0.2 red, 0.7 green, and 0.4 blue
             can also be expressed as 1.0 - 0.2= 0.8 cyan, 1.0 - 0.7 =
             0.3 magenta, and 1.0 - 0.4 = 0.6 yellow. To improve the
             fidelity of blacks and grays, a fourth process color,
             black, is often available on color printers. Just as red
             in the RGB specification is the opposite of cyan in the CMYK
             specification, a black value is the opposite to a PostScript
             language gray value; that is,

                black =1.0-gray.

          __________________________________________________________

          C.4.2  Black Generation and Undercolor Removal

             Logically, cyan, magenta, and yellow are all that are needed
             to generate a printing color completely. Thus an equal
             percentage of cyan, magenta, and yellow should create the
             equivalent percentage of black. In reality, colored printing
             inks do not mix perfectly, and such combinations often form
             dark brown shades instead. Thus, it is often desirable to
             substitute real black ink for the mixed-black portion of a
             color to obtain a truer color rendition on a printer.


                         Color Extensions for the PostScript Language  C-5

 






             Black generation is the process of calculating the amount
             of black to be used when trying to print a particular color.
             Undercolor removal is the process of reducing the amount
             of cyan, magenta, and yellow components to compensate for
             the amount of black that was added by the black generation.
             Flexibility in performing these functions is important for
             achieving good results under different printing conditions.

             The setblackgeneration operator provides the functionality
             to generate extra black, no black, or a black value equal
             to all or a fraction of the minimum values of cyan, magenta,
             and yellow (see Section C.5). Its argument is a procedure
             that takes one numeric argument, the minimum value of user
             cyan, magenta, and yellow color components, and returns a
             single numeric result, the user black value (where a user
             color component value is that specified in the POSTSCRIPT
             language program before application of the corresponding
             transfer function). This procedure is automatically applied
             whenever setrgbcolor, the three-color case of colorimage (see
             Section C.3), or sethsbcolor specify a color. This user black
             value is then mapped to a device black value by applying
             the gray transfer function to its difference from 1.0 and
             subtracting the result from 1.0 (see setcolortransfer in
             Section C.5). The black generation function is not applied
             when setgray, setcmykcolor (see Section C.5), or the one- or
             four-color cases of colorimage specify colors. This computed
             black value is used only when outputting on four-color output
             devices.

             The setundercolorremoval operator (see Section C.5) provides
             functionality to remove some amount of color from each of
             the cyan, magenta, and yellow components. This amount could
             be exactly the same amount as was generated to make the
             black component, zero (so no color is removed from the cyan,
             magenta and yellow components), some fraction of the black
             amount, or even a negative amount. Like setblackgeneration,
             this operator permits considerable flexibility in color
             correction.

          C-6  Color Extensions for the PostScript Language

 






             The argument to setundercolorremoval is a procedure that
             takes one numeric argument, the minimum value of user
             cyan, magenta, and yellow color components, and returns a
             single numeric result that is subtracted from each of these
             original user color components. This procedure is applied
             whenever setrgbcolor, the three-color case of colorimage
             (see Section C.5), or sethsbcolor specify a color. After
             subtracting the value generated in the above mapping from
             the color components and resetting negative values to 0.0 and
             values greater than 1.0 to 1.0, each component is subtracted
             from 1.0 to yield red, green, and blue components. Each of
             these components is mapped into a device color component
             using its respective transfer function (see setcolortransfer
             in Section C.5). Undercolor removal is not applied when
             setgray, setcmykcolor, or the one- or four-color cases of
             colorimage specify a color. Undercolor removal is used only
             when outputting on four-color devices.

             The following equations define the complete color
             transformation process from RGB to CMYK. The values red(u),
             grn(u), blu(u), gry(u), cyn(u), mag(u), yel(u), and blk(u)
             are the (input) values of user red, green, blue, gray, cyan,
             magenta, yellow, and black, respectively. UCR()  is the
             undercolor removal function. BG()  is the black generation
             function. RedT, GrnT, BluT, and GryT are the red, green,
             blue and gray transfer functions (see setcolortransfer
             in Section C.5), respectively. The values red(d), grn(d),
             blu(d), gry(d), cyn(d), mag(d), yel(d), and blk(d) are the
             (output) values of device red, green, blue, gray, cyan,
             magenta, yellow, and black, respectively.

                cynu =1.0-red u
                magu =1.0-grn u
                yelu =1.0-blu u
                gryu =1.0
                blku =0.0
                k =Min(cynu,mag u,yelu)
                u =UCR(k)
                redd =RedT(1.0-Min(1.0,Max(0.0,cyn  u -u)))

                         Color Extensions for the PostScript Language  C-7

 






                grnd =GrnT(1.0-Min(1.0,Max(0.0,mag  u -u)))
                blud =BluT(1.0-Min(1.0,Max(0.0,yel  u -u)))
                gryd =GryT(1.0-BG(k))
                cynd =1.0-red d
                magd =1.0-grn d
                yeld =1.0-blu d
                blkd =1.0-gry d

          __________________________________________________________

          C.4.3  Direct CMYK Color Specification

             For the most demanding cases, color matching can require
             more complicated methods than those described above.
             The setcmykcolor operator and the four-color case of
             the colorimage operator bypass the black generation and
             undercolor removal operations, allowing the knowledgable
             user to specify the cyan, magenta, yellow, and black
             color components for a particular device. This operator
             provides no correction other than the transfer functions
             setcolortransfer specifies (see Section C.5); the results are
             device dependent.

             The following equations define the complete color
             transformation process for the setcmykcolor operator and
             the four-color case of the colorimage operator. The values
             are as defined in Black Generation and Undercolor Removal
             Section C.4.2. These equations are equivalent to those given
             above except for the omission of the black generation and
             undercolor removal steps.

                redu =1.0-cyn u
                grnu =1.0-mag u
                bluu =1.0-yel u
                gryu =1.0-blk u
                redd =RedT(redu )
                rnd =GrnT(grnu )
                blud =BluT(bluu )
                gryd =GryT(gryu )
                cynd =1.0-red d

          C-8  Color Extensions for the PostScript Language

 






                magd =1.0-grn d
                yeld =1.0-blu d
                blkd =1.0-gry d

          __________________________________________________________

          C.4.4  Color Screens, Transfer Functions, and Images

             The operators setcolorscreen, currentcolorscreen,
             setcolortransfer, and currentcolortransfer provide an
             expansion of the operators setscreen, currentscreen,
             settransfer, and currenttransfer, respectively, by setting up
             a screen and a transfer function for each color component.
             The colorimage operator provides an expansion of the image
             operator to allow samples of one, three, or four color
             components. (See Section C.5 for more details.)

          __________________________________________________________

          C.4.4.1  colorimage

             colorimage is the logical expansion of image to handle
             sampled images whose samples are composed of more than one
             color component. The initial arguments to colorimage are the
             same as those for image. The final arguments differ according
             to the number of color components per sample and according to
             the encoding method.

             The arguments to colorimage are as follows:

                width height bits/component matrix proc(0)
                [...proc(ncolors-1)] multiproc ncolors

             (See Section C.5 for precise definitions of these arguments.)

             ncolors describes the number of color components in each
             sample. Legal values for ncolors are 1 (gray-level samples
             only), 3 (RGB samples), or 4 (CMYK samples). multiproc
             distinguishes between encoding methods. The possibilities
             for multiproc are false (single procedure, color components
             are bunched together) or true (multiple procedures, one per
             color, components are separated into strings of like colors).

                         Color Extensions for the PostScript Language  C-9

 






             The legal variations of ncolors and multiproc allow the
             following possibilities (where proc subscripts have been
             changed to words to indicate the purpose of each proc):

                w h b/c matrix proc(gray) false 1
                w h b/c matrix proc(gray) true 1
                w h b/c matrix proc(rgb) false 3
                w h b/c matrix proc(red) proc(green)proc(blue) true 3
                w h b/c matrix proc(cmyk) false 4
                w h b/c matrix proc(cyan) proc(magenta)proc(yellow)
                proc(black) true 4

             The first two variations here are both equivalent to

                w h b/s matrix proc(gray) image

          __________________________________________________________

          C.4.4.1.1  Data formats for colorimage operator

             As indicated above, the colorimage operator has two forms,
             distinguished by its multiproc argument.

             The single-procedure form is most useful if sample input
             is taken from a source that has already merged the color
             components. This form provides samples for which each RGB
             triple or CMYK quadruple is packed together in the string
             result of the procedure, using one of the following bit
             formats (where the high-order bit is shown on the left):

             _____________________________________________________________
             Bits/comp.____RGB_Format_____________________________________

             1    RGBRGBRG  BRGBRGBR  GBRGBRGB  RGBRGBRG   ....

             2    RRGGBBRR  GGBBRRGG  BBRRGGBB  RRGGBBRR   ....

             4    RRRRGGGG  BBBBRRRR  GGGGBBBB  RRRRGGGG   ....

             8____RRRRRRRR__GGGGGGGG__BBBBBBBB__RRRRRRRR___....___________

             or

          C-10  Color Extensions for the PostScript Language

 





             _____________________________________________________________
             Bits/comp._____CMYK_Format___________________________________

             1    CMYKCMYK  CMYKCMYK    CMYKCMYK  CMYKCMYK   ....

             2    CCMMYYKK  CCMMYYKK    CCMMYYKK  CCMMYYKK   ....

             4    CCCCMMMM  YYYYKKKK    CCCCMMMM  YYYYKKKK    ....

             8____CCCCCCCC__MMMMMMMM____YYYYYYYY__KKKKKKKK___...._________

             The multiple-procedure form expects each procedure to return
             a string of values for only one color component per sample,
             using the same format as strings returned by the proc
             argument of the image operator. For a three-color image,
             proc(0) returns red values, proc(1) returns green values, and
             proc(2) returns blue values. For a four-color image, proc(0)
             returns cyan values, proc(1) returns magenta values, proc(2)
             returns yellow values, and proc(3) returns black values.
             The colorimage operator calls each of these procedures in
             turn, starting with proc(0) and continuing with proc(1),
             proc(2), and, if available, proc(3). When the colorimage
             operator needs more samples, it calls these procedures again
             in the same order. The color procedures must use separate
             strings for the three or four results of the three or four
             procedures, i.e., reusing the red string for the green values
             can result in some of the red values being lost. Also, the
             three or four procedures must return strings of identical
             lengths within each cycle of three or four calls.

             The multiple-procedure form is most useful when color
             sample data are taken from separate color scanner passes.
             The colorimage operator requires the color data to be
             interleaved, as it must have all three or four components
             of any sample at the same time to do its work. The
             single-procedure form interleaves the data at the sample
             level; this may be convenient only if the data are already
             in that form when preparing the POSTSCRIPT language page
             description. The multiple-procedure form allows interleaving
             at a much coarser level. Typically, each procedure of the

                        Color Extensions for the PostScript Language  C-11

 






             multiple-procedure form returns components for some number
             of scan lines of samples, where the number of components
             returned at each call is limited by the string storage
             available in the POSTSCRIPT interpreter.

          __________________________________________________________

          C.4.4.1.2  Examples for colorimage operator

             The following examples illustrate the use of the colorimage
             operator:

             EXAMPLE 1:

               /rgbstr 192 string def    % string to hold 256 two-bit samples
                                         %   each of red, green, and blue data
               45 140 translate          % locate lower left corner of image
               132 132 scale             % map image to 132 point square
               256 256 2                 % dimensions of source image
               [256 0 0 -256 0 256]      % map unit square to source
               {currentfile              % read image date from program file
               rgbstr readhexstring pop}
               false 3                   % single proc, 3 colors, bit format:
                                         %   rrggbbrr ggbbrrgg bbrrggbb ...
               colorimage
               94a1bec8c0b371a3a5c4d281 ...   (98304 hex digits of image data)

             The above is a one-procedure 2-bit RGB image. The base-4
             representation of the hex data is

                   2110 2201 2332 ...

             which is composed of the following color samples:

               r=2 g=1 b=1 r=0   g=2 b=2 r=0 g=1   b=2 r=3 g=3 b=2 ...




          C-12  Color Extensions for the PostScript Language

 






             EXAMPLE 2:

               /rstr 256 string def      % string to hold 256 8-bit red samples
               /gstr 256 string def      % string to hold 256 8-bit green samples
                                         %  (distinct from rstr)
               /bstr 256 string def      % string to hold 256 8-bit blue samples
                                         %  (distinct from rstr and bstr)
               45 140 translate          % locate lower left corner of image
               132 132 scale             % map image to 132 point square
               256 256 8                 % dimensions of source image
               [256 0 0 -256 0 256]      % map unit square to source
               {currentfile rstr readhexstring pop}
                                         % read red data from program file
               {currentfile gstr readhexstring pop}
                                         % read green data from program file
               {currentfile bstr readhexstring pop}
                                         % read blue data from program file
               true 3                    % multiple proc, 3 colors
               colorimage
               7b5e606969615365556a6a66 ...   (512 hex digits of red data)
               88868d848a92878578787a82 ...   (512 hex digits of green data)
               62717c7b736e707d7b6a7c79 ...   (512 hex digits of blue data)
               7dd8b8d8c837d8b8e9284878e ...  (512 hex digits of red data)
               2788b838b8e8e86868988908 ...   (512 hex digits of green data)
               81817d857f85858290949487 ...   (512 hex digits of blue data)
               ... (390144 more hex digits of RGB data, cycling as above)

             The above is a three-procedure 8-bit RGB image. The initial
             samples for each color, in hex, are:

             red:   7b   5e   60   69   ...

             green: 88   86   8d   84   ...

             blue:  62   71   7c   7b   ...




                        Color Extensions for the PostScript Language  C-13

 






             EXAMPLE 3:

               /cstr 128 string def      % string to hold 256 4-bit cyan samples
               /mstr 128 string def      % string to hold 256 4-bit magenta samples
                                         %  (distinct from cstr)
               /ystr 128 string def      % string to hold 256 4-bit yellow samples
                                         %  (distinct from cstr and mstr)
               /kstr 128 string def      % string to hold 256 4-bit black samples
                                         %  (distinct from cstr, mstr, and ystr)
               45 140 translate          % locate lower left corner of image
               132 132 scale             % map image to 132 point square
               256 256 4                 % dimensions of source image
               [256 0 0 -256 0 256]      % map unit square to source
               {currentfile cstr readhexstring pop}
                                         % read cyan data from program file
               {currentfile mstr readhexstring pop}
                                         % read magenta data from program file
               {currentfile ystr readhexstring pop}
                                         % read yellow data from program file
               {currentfile kstr readhexstring pop}
                                         % read black data from program file
               true 4                    % multiple proc, 4 colors
               colorimage
               e1d8caa57b655b6779606b72 ...   (256 hex digits of cyan data)
               6bdbb867b9fb6a4859569989 ...   (256 hex digits of magenta data)
               996796e639cc0b29f94736c7 ...   (256 hex digits of yellow data)
               c9c0cad0d3cad2b7c9e2d7d8 ...   (256 hex digits of black data)
               5d2d6d7d4d3d1d4d6c9d4d9d ...   (256 hex digits of cyan data)
               4cdcfd4d6d1d8d7d5d4d2d2d ...   (256 hex digits of magenta data)
               d2b7c9e2d7d8d8cbbac2d9d8 ...   (256 hex digits of yellow data)
               88ae96632a70f6f4d8d9d9d8 ...   (256 hex digits of black data)
               ... (260096 more hex digits of CMYK data, cycling as above)

             The above is a four-procedure four-bit CMYK image. The
             initial sample for each color, in hex, are

             cyan:   e 1 d 8 c a a 5 ...


          C-14  Color Extensions for the PostScript Language

 







             magenta:6 b d b b 8 6 7 ...

             yellow: 9 9 6 7 9 6 e 6 ...

             black:  c 9 c 0 c a d 0 ...

             EXAMPLE 4:

               /cstr 1024 string def     % string to hold 1024 8-bit cyan samples
               /mstr 1024 string def     % string to hold 1024 8-bit magenta samples
                                         %  (distinct from cstr)
               /ystr 1024 string def     % string to hold 1024 8-bit yellow samples
                                         %  (distinct from cstr and mstr)
               /kstr 1024 string def     % string to hold 1024 8-bit black samples
                                         %  (distinct from cstr, mstr, and ystr)
               /cfile (img/smp.c) (r) file def   % binary file containing 1048576 8-bit
                                                 %   cyan samples
               /mfile (img/smp.m) (r) file def   % binary file containing 1048576 8-bit
                                                 %   magenta samples
               /yfile (img/smp.y) (r) file def   % binary file containing 1048576 8-bit
                                                 %   yellow samples
               /kfile (img/smp.k) (r) file def   % binary file containing 1048576 8-bit
                                                 %   black samples
               36 126 translate          % locate lower left corner of image
               540 540 scale             % map image to 540 point square
               1024 1024 8               % dimensions of source image
               [1024 0 0 -1024 0 1024]   % map unit square to source
               {cfile cstr readstring pop}       % read cyan data from imp/smp.c
               {mfile mstr readstring pop}       % read magenta data from imp/smp.m
               {yfile ystr readstring pop}       % read yellow data from imp/smp.y
               {kfile kstr readstring pop}       % read black data from imp/smp.k
               true 4                    % multiple proc, 4 colors
               colorimage





                        Color Extensions for the PostScript Language  C-15

 






             The above is a four-procedure 8-bit CMYK image, with cyan,
             magenta, yellow, and black samples taken from the files
             img/smp.c, img/smp.m, img/smp.y, and img/smp.k, respectively.
             This example only applies to a POSTSCRIPT interpreter that
             has a file system.

          __________________________________________________________

          C.4.5  Color Implementations

             Each POSTSCRIPT interpreter contains default color output
             methods that correspond to the printer to which it is
             attached. If the attached printer is a direct-color binary
             device, the standard output method produces three- or
             four-color output. If the attached printer is a gray-scale
             color device, then the POSTSCRIPT interpreter uses a
             gray-scale three- or four-color output method. If the
             attached printer is a black-and-white device, then the
             default output method produces a single black-and-white
             rendition of each page described.

             Black-and-white printers also have the capability of
             producing color separations. These are three or four
             black-and-white pages for each page described. Each output
             page corresponds to the output for one color component. These
             separations are only useful if they are used in another
             printing process in which they are combined with color to
             form the intended full-color output.

             The method by which a POSTSCRIPT language program informs the
             POSTSCRIPT interpreter that color separations are desired is
             still to be determined. This color separation capability will
             not be provided in the backward compatibility packages, as
             it requires considerable internal changes in the POSTSCRIPT
             interpreter.




          C-16  Color Extensions for the PostScript Language

 





          __________________________________________________________

          C.5  Operators

             Each color extension operator description shows syntax in the
             following format:

             operand(1)...operand(n) operator (result(1)...result(m))

             The operands precede and are input to the operator, with
             operand(n) being the top element on the operand stack.
             The operator pops these objects from the operand stack and
             consumes them. After executing, the operator leaves result(1)
             through result(m) on the operand stack, with result(m) being
             the top element.

             A dash in an operand position indicates that the operator
             expects no operands. Likewise, a dash in a result position
             indicates that the operator returns no results, as follows:

              - operator -



















                        Color Extensions for the PostScript Language  C-17

 


          colorimage



          ________________________________________________________________

          colorimage

             Renders a sampled image, whose samples contain one, three, or
             four color components on the current page.

             Use of the colorimage operator after a setcachedevice within
             the context of a BuildChar procedure is not permitted (an
             undefined error results).

          ________________________________________________________________

          FORMAT

             width height bits/component matrix proc(0)

             [...proc(ncolors-1)] multiproc ncolors colorimage

             -

             width
             The width of the image, in samples. This argument has the
             same meaning as in the image operator.

             height
             The height of the image, in samples. This argument has the
             same meaning as in the image operator.

             bits/component
             The number of bits per each component of each sample. This
             value applies equally to all color components, and has the
             same meaning as in the image operator.

             matrix
             Transforms the samples into a unit square. This argument has
             the same meaning as in the image operator.


          C-18  Color Extensions for the PostScript Language

 


                                                                colorimage



             proc(0) [... proc(ncolors-1)]
             Procedures that return strings of samples to be imaged.
             colorimage permits its proc(i) arguments to return RGB or
             CMYK sample values rather than the single-color (gray) values
             as are returned by the proc argument of the image operator.
             For a detailed description of the data formats and how the
             proc(i) procedures are called, see Section C.4.4.1.1.

             Use of setcolorscreen, setcolortransfer, setscreen, or
             settransfer by any of the proc(i) procedures causes
             unpredictable results.

             multiproc
             A boolean that distinguishes between two forms of the
             colorimage operator: false indicates the single-procedure
             form, argument (proc(0)), and true indicates the
             multiple-procedure form, which requires one procedure
             argument per sample color (proc(0) ... proc(ncolors-1)),
             i.e., three procedure arguments for RGB samples or four
             procedure arguments for CMYK samples. If the ncolors argument
             is 1, then there is only one procedure argument, proc(0),
             regardless of the value of the multiproc argument.

             ncolors
             The number of color components represented in the samples,
             either 1, 3, or 4. If ncolors is 1, the samples have only
             one component, a gray component, and the operation of
             colorimage is equivalent to that of image with the same
             five initial arguments. If the ncolors argument is 3, the
             colorimage operator takes RGB (light-high) samples. If the
             ncolors argument is 4, the colorimage operator takes CMYK
             (dark-high) samples. On a four-color (CMYK) machine, the
             POSTSCRIPT interpreter converts a three-color (RGB) image
             to CMYK using the black generation and undercolor removal
             functions, whereas a four-color (CMYK) image bypasses these
             operations.



                        Color Extensions for the PostScript Language  C-19

 


          colorimage



          __________________________________________________________

          Errors

             limitcheck
             A POSTSCRIPT implementation limit has been exceeded.

             rangecheck
             An operand value is not in the allowed range of values.

             stackunderflow
             The operand stack is empty when the operator expects a value.

             typecheck
             An operand value is not the type that the operator expects.

             undefined
             Attempted to use the colorimage operator after a
             setcachedevice in the context of a BuildChar procedure.

             undefinedresult
             A numeric computation produced a meaningless result.

















          C-20  Color Extensions for the PostScript Language

 


                                                    currentblackgeneration



          ________________________________________________________________

          currentblackgeneration

             Returns the current black generation function in the graphics
             state (see setblackgeneration).

          ________________________________________________________________

          FORMAT

             - currentblackgeneration  proc

             proc
             The current black generation function.

          __________________________________________________________

          Error

             stackoverflow
             The operand stack is full, preventing the operator from
             adding the returned values to the stack.
















                        Color Extensions for the PostScript Language  C-21

 


          currentcmykcolor



          ________________________________________________________________

          currentcmykcolor

             Returns the four components of the current color in the
             graphics state according to the cyan-magenta-yellow-black
             color specification (see setcmykcolor).

             The currentgray operator returns a weighted average of all
             four color components. Applying it is the equivalent of the
             following use of currentcmykcolor:

               1.0 currentcmykcolor 4 1 roll 0.11 mul 3 1 roll 0.59 mul
               exch 0.30 mul add add add sub dup 0.0 lt {pop 0.0} if

          ________________________________________________________________

          FORMAT

             - currentcmykcolor  cyan magenta yellow black

             cyan
             The cyan component of the current color.

             magenta
             The magenta component of the current color.

             yellow
             The yellow component of the current color.

             black
             The black component of the current color.

          __________________________________________________________

          Error

             stackoverflow
             The operand stack is full, preventing the operator from
             adding the returned values to the stack.

          C-22  Color Extensions for the PostScript Language

 


                                                        currentcolorscreen



          ________________________________________________________________

          currentcolorscreen

             Returns all 12 current halftone screen parameters in the
             graphics state (see setcolorscreen).

             The currentcolorscreen operator is the logical expansion
             of currentscreen to four color components. Applying the
             currentscreen operator returns the three paramters describing
             the gray/black screen. It is the equivalent of the following
             use of currentcolorscreen:

               currentcolorscreen 12 3 roll 9 {pop} repeat

          ________________________________________________________________

          FORMAT

             - currentcolorscreen  r/c-freq r/c-angle r/c-proc g/m-freq

                                   g/m-angle g/m-proc b/y-freq b/y-angle

                                   b/y-proc g/b-freq g/b-angle g/b-proc

             r/c-freq r/c-angle r/c-proc
             The frequency, angle, and procedure for the red/cyan screen.

             g/m-freq g/m-angle g/m-proc
             The frequency, angle, and procedure for the green/magenta
             screen.

             b/y-freq b/y-angle b/y-proc
             The frequency, angle, and procedure for the blue/yellow
             screen.

             g/b-freq g/b-angle g/b-proc
             The frequency, angle, and procedure for the gray/black
             screen.

                        Color Extensions for the PostScript Language  C-23

 


          currentcolorscreen



          __________________________________________________________

          Error

             stackoverflow
             The operand stack is full, preventing the operator from
             adding the returned values to the stack.
































          C-24  Color Extensions for the PostScript Language

 


                                                      currentcolortransfer



          ________________________________________________________________

          currentcolortransfer

             Returns the current transfer functions in the graphics state
             for each of the four color components (see setcolortransfer).

             The currentcolortransfer operator is the logical expansion
             of currenttransfer to four color components. Applying
             the currenttransfer operator returns the gray transfer
             function. It is the equivalent of the following use of
             currentcolortransfer:

               currentcolortransfer 4 1 roll pop pop pop

          ________________________________________________________________

          FORMAT

             - currentcolortransfer  redproc greenproc blueproc grayproc

             redproc
             The transfer function for the red component.

             greenproc
             The transfer function for the green component.

             blueproc
             The transfer function for the blue component.

             grayproc
             The transfer function for the gray component.

          __________________________________________________________

          Error

             stackoverflow
             The operand stack is full, preventing the operator from
             adding the returned values to the stack.

                        Color Extensions for the PostScript Language  C-25

 


          currentundercolorremoval



          ________________________________________________________________

          currentundercolorremoval

             Returns the current undercolor removal function in the
             graphics state (see setundercolorremoval).

          ________________________________________________________________

          FORMAT

             - currentundercolorremoval  proc

             proc
             The current undercolor removal function.

          __________________________________________________________

          Error

             stackoverflow
             The operand stack is full, preventing the operator from
             adding the returned values to the stack.
















          C-26  Color Extensions for the PostScript Language

 


                                                        setblackgeneration



          ________________________________________________________________

          setblackgeneration

             Sets the current black generation function parameter in the
             graphics state.

             The use of setblackgeneration after a setcachedevice
             operation within the scope of a BuildChar procedure is not
             permitted (an undefined error results).

          ________________________________________________________________

          FORMAT

             proc setblackgeneration -

             proc
             A POSTSCRIPT language procedure that can be called with a
             number in the range 0.0 to 1.0 (inclusive) on the operand
             stack and which returns a number in the same range. This
             procedure maps the minimum of the user cyan, magenta, and
             yellow color components to user black values. For additional
             information, see Section C.4.

          __________________________________________________________

          Example

             This sets the black component to zero when the minimum of
             cyan, magenta, and yellow is less than or equal to 0.75,
             while minima greater than 0.75 produce a black component that
             increases linearly from 0.0 (at a minimum of 0.75) to 1.0
             (when user cyan, magenta, and yellow all have values of 1.0).

               {dup 0.75 le {pop 0.0}{0.75 sub 4.0 mul} ifelse} setblackgeneration



                        Color Extensions for the PostScript Language  C-27

 


          setblackgeneration



          __________________________________________________________

          Errors

             stackunderflow
             The operand stack is empty when the operator expects a value.

             typecheck
             An operand value is not the type that the operator expects.






























          C-28  Color Extensions for the PostScript Language

 


                                                              setcmykcolor



          ________________________________________________________________

          setcmykcolor

             Sets the current color parameter in the graphics state to
             a color described in the cyan-magenta-yellow-black color
             specification.

             The use of setcmykcolor after a setcachedevice operation
             within the scope of a BuildChar procedure is not permitted
             (an undefined error results).

          ________________________________________________________________

          FORMAT

             cyan magenta yellow black setcmykcolor -

             cyan
             The value of the cyan color component. Must be in the range
             0.0 to 1.0.

             magenta
             The value of the magenta color component. Must be in the
             range 0.0 to 1.0.

             yellow
             The value of the yellow color component. Must be in the range
             0.0 to 1.0.

             black
             The value of the black color component. Must be in the range
             0.0 to 1.0.






                        Color Extensions for the PostScript Language  C-29

 


          setcmykcolor



          __________________________________________________________

          Description

             setcmykcolor establishes the color used subsequently to
             paint shapes such as lines, areas, and characters on the
             current page. This operator bypasses the black generation and
             undercolor removal operations.

             For additional information, see Section C.4.

             Note that applying the setgray operator sets the gray color
             component to its single argument and the red, green, and
             blue color components to 1.0. It is the equivalent of the
             following use of setcmykcolor:

               0.0 0.0 0.0 1.0 5 -1 roll sub setcmykcolor

          __________________________________________________________

          Errors

             rangecheck
             An operand value is not in the allowed range of values.

             stackunderflow
             The operand stack is empty when the operator expects a value.

             typecheck
             An operand value is not the type that the operator expects.









          C-30  Color Extensions for the PostScript Language

 


                                                            setcolorscreen



          ________________________________________________________________

          setcolorscreen

             Sets the current halftone screen definitions for red/cyan
             (r/c), green/magenta (g/m), blue/yellow (b/y), and gray/black
             (g/b) output color components in the graphics state.

          ________________________________________________________________

          FORMAT

             r/c-freq r/c-angle r/c-proc g/m-freq g/m-angle g/m-proc

             b/y-freq b/y-angle b/y-proc g/b-freq g/b-angle g/b-proc

             setcolorscreen -

             r/c-freq r/c-angle r/c-proc
             The frequency, angle, and procedure for the red/cyan screen.

             g/m-freq g/m-angle g/m-proc
             The frequency, angle, and procedure for the green/magenta
             screen.

             b/y-freq b/y-angle b/y-proc
             The frequency, angle, and procedure for the blue/yellow
             screen.

             g/b-freq g/b-angle g/b-proc
             The frequency, angle, and procedure for the gray/black
             screen.







                        Color Extensions for the PostScript Language  C-31

 


          setcolorscreen



          __________________________________________________________

          Description

             Each of the r/c-freq, g/m-freq, b/y-freq, and g/b-freq
             operands is a number that specifies the screen frequency for
             one output color component, measured in halftone cells per
             inch in device space. The r/c-angle, g/m-angle, b/y-angle,
             and g/b-angle operands specify the number of degrees by which
             their respective halftone screens are rotated with respect
             to the device coordinate system. The r/c-proc, g/m-proc,
             b/y-proc, and g/b-proc operands are each a POSTSCRIPT
             language procedure (as for setscreen). They define one
             color component's spot function to determine the order in
             which pixels within a halftone cell of that color component
             are assigned a light value to produce any desired shade of
             that color component. As with setscreen, the pixels with the
             highest values returned by this function become dark soonest
             at the lightest shades of that color, and the pixels with
             the lowest values become dark latest at the darkest shades of
             that color. The red/cyan, green/magenta, and blue/yellow
             screens have no effect on a black-and-white device, the
             gray/black screen has no effect on an RGB or CMY device,
             and no screens have any effect on a full (8-bits-per-pixel)
             gray-scale device.

             Many binary color printers (those that print each dot at
             full intensity or not at all) require different angles for
             each color-component halftone to have attractive output.
             Each color printer containing a POSTSCRIPT interpreter has a
             default color screen chosen to look good on that printer.

             The setcolorscreen operator is the logical expansion of
             setscreen to the four color components. It takes the same
             three types of arguments as setscreen, but repeated four
             times. Applying the setscreen operator sets all four screens
             equally. It is the equivalent of the following use of
             setcolorscreen:

               3 copy 6 copy setcolorscreen

          C-32  Color Extensions for the PostScript Language

 


                                                            setcolorscreen



          __________________________________________________________

          Example

             This sets the halftone screen definitions for red/cyan (r/c),
             green/magenta (g/m), blue/yellow (b/y), and gray/black (g/b)
             output color components for standard color printing.

               % 50 line dot screen with 75 degree cyan,
               % 15 degree magenta,
               % 0 degree yellow,
               % and 45 degree black angled screens,
               % which are standard for color printing
               /sfreq 50 def          % 50 halftone cells per inch
               /sproc { dup mul exch dup mul add 1 exch sub} def
                                      % dot-screen spot function
               sfreq 75 /sproc load   % 75 degree red (cyan) screen
               sfreq 15 /sproc load   % 15 degree green (magenta) screen
               sfreq 0 /sproc load    % 0 degree blue (yellow) screen
               sfreq 45 /sproc load   % 45 degree gray (black) screen
               setcolorscreen

          __________________________________________________________

          Errors

             limitcheck
             A POSTSCRIPT implementation limit has been exceeded.

             rangecheck
             An operand value is not in the allowed range of values.

             stackunderflow
             The operand stack is empty when the operator expects a value.

             typecheck
             An operand value is not the type that the operator expects.


                        Color Extensions for the PostScript Language  C-33

 


          setcolortransfer



          ________________________________________________________________

          setcolortransfer

             Sets the current transfer function parameters for red, green,
             blue, and gray in the graphics state.

          ________________________________________________________________

          FORMAT

             redproc greenproc blueproc grayproc setcolortransfer -

             redproc
             The transfer function for the red component.

             greenproc
             The transfer function for the green component.

             blueproc
             The transfer function for the blue component.

             grayproc
             The transfer function for the gray component.

          __________________________________________________________

          Description

             Each operand must be a POSTSCRIPT language procedure that may
             be called with a number in the range 0.0 to 1.0 (inclusive)
             on the operand stack and which will return a number in the
             same range. These procedures map user values of the color
             components (e.g., those specified by setrgbcolor and adjusted
             by setblackgeneration and setundercolorremoval, or 1.0 minus
             those specified by setcmykcolor) to device color components
             (for halftones, a weighted average of the lightness of
             pixels in the halftone cell). Only those transfer functions
             corresponding to color components supported by a device
             will have an effect on that device's output. For example,
             redproc, greenproc, and blueproc will have no effect on a

          C-34  Color Extensions for the PostScript Language

 


                                                          setcolortransfer



             black-and-white device, while grayproc will have no effect on
             an RGB device.

             The single-color settransfer operator takes a single
             procedure argument whose purpose is to provide gamma
             correction for a printer's halftoning response. That operator
             is useful for a variety of effects beyond its original
             intention as a gray response correction function, but it
             is useful only in the context of a single output color, as
             on black-and-white printers. The setcolortransfer operator
             is the logical expansion of settransfer to four color
             components; it takes four function arguments, each similar
             in purpose to the function argument of settransfer, but each
             function separately controls the response for each of the red
             (1.0 minus cyan), green (1.0 minus magenta), blue (1.0 minus
             yellow), and gray (1.0 minus black) components, respectively.

             Applying the settransfer operator sets all four transfer
             functions equally. It is the equivalent of the following use
             of setcolortransfer:

               dup dup dup setcolortransfer

             The use of setcolortransfer after a setcachedevice operation
             within the scope of a BuildChar procedure is not permitted
             (an undefined error results).

          __________________________________________________________

          Example

             This sets device blue as the square of user blue and leaves
             the other color components unchanged.

               {} {} {dup mul} {} setcolortransfer




                        Color Extensions for the PostScript Language  C-35

 


          setcolortransfer



          __________________________________________________________

          Errors

             stackunderflow
             The operand stack is empty when the operator expects a value.

             typecheck
             An operand value is not the type that the operator expects.






























          C-36  Color Extensions for the PostScript Language

 


                                                      setundercolorremoval



          ________________________________________________________________

          setundercolorremoval

             Sets the current undercolor removal function parameter in the
             graphics state.

             The use of setundercolorremoval after a setcachedevice
             operation within the scope of a BuildChar procedure is not
             permitted (an undefined error results).

          ________________________________________________________________

          FORMAT

             proc setundercolorremoval -

             proc
             A POSTSCRIPT language procedure that may be called with a
             number in the range 0.0 to 1.0 (inclusive) on the operand
             stack and which will return a number in the range -1.0 (to
             increase the color components) to +1.0 (to decrease the
             color components). This procedure maps the minimum of the
             user cyan, magenta, and yellow components to a value to be
             subtracted from each of these same components.

             For additional information, see Section C.4.

          __________________________________________________________

          Example

             This sets the undercolor removal to be half of the black
             component from black generation.

               {currentblackgeneration exec 0.5 mul} setundercolorremoval



                        Color Extensions for the PostScript Language  C-37

 


          setundercolorremoval



          __________________________________________________________

          Errors

             stackunderflow
             The operand stack is empty when the operator expects a value.

             typecheck
             An operand value is not the type that the operator expects.






























          C-38  Color Extensions for the PostScript Language

 











                                                                Appendix D


                                                Troubleshooting Procedures
          ________________________________________________________________


             The following troubleshooting procedures are provided to
             diagnose error conditions encountered when using the DECprint
             Utility software.

          __________________________________________________________

          D.1  Your DECprint Utility Job Does Not Print

             If your DECprint Utility job completes successfully and does
             not print, check to ensure that the POSTSCRIPT file contains
             a showpage command. Some applications that generate figures
             for inclusion into other documents do not include a showpage
             command at the end of the POSTSCRIPT code.

          __________________________________________________________

          D.2  Your Job Reports UNDEF Error Messages

             If your DECprint Utility job reports an UNDEF error, your
             file may not contain the right data type, may contain
             nonstandard undefined operators, or may contain control
             characters. The following sections describe what you can
             do to print your file successfully.




                                           Troubleshooting Procedures  D-1

 





          __________________________________________________________

          D.2.1  Unsupported File Extensions

             If you receive the following error message, check to see if
             the file you submitted with the DECprint Utility command is a
             POSTSCRIPT file.

               %PSPRINT-W-UNDEF, undefined: Name not known - offending command
               is string

          __________________________________________________________

          D.2.2  Unsupported PostScript Operators

             The DECprint Utility does not define device-specific
             POSTSCRIPT operators that it does not use. If your file
             contains a nonstandard operator, setjobtimeout, for example,
             then your job does not print and you receive the following
             messages:

               %PSPRINT-W-UNDEF, undefined: Name not known - offending command
               is setjobtimeout

               %PSPRINT-E-FLUSING, rest of job will be ignored

             To print your file containing the undefined operator, do the
             following:

              1.Create a file (fix.PS) containing this line:

                  /setjobtimeout {pop} def

              2.Name this file on the DECprint Utility command line before
                your file:

                  $PSPRINT/QUEUE=queue-name fix.PS,myfile.ps

             Other nonstandard operators that are not defined by the
             DECprint Utility can cause the same problem. Follow the same
             procedure, substituting the name of the operator named in the
             UNDEF error message in place of the setjobtimeout operator.

          D-2  Troubleshooting Procedures

 





          __________________________________________________________

          D.2.3  Problems With Files Containing CTRL/D

             If processing a file with the DECprint Utility results
             in an UNDEF error message reporting that the offending
             command is a standard operator, such as showpage, or is left
             blank, then your file may contain a control character. When
             receiving this type of error message, convert your file with
             /MESSAGES=FILE and look at the .LOG file, which captures
             control characters. <CTRL/D> is the most likely control
             character you may encounter.

             To successfully print files containing <CTRL/D> with the
             DECprint Utility, do one of the following:

              o Edit the file (or change the application) and remove the
                control character.

              o Create a POSTSCRIPT file (fix2.PS) containing the line:

                  (/004) cvn cvlit {} def

                Name this file on the DECprint Utility command line before
                your file:

                  $ PSPRINT/QUEUE=queue-name fix2.PS,myfile.PS

             The DECprint Utility software then ignores <CTRL/D> in your
             file.

          __________________________________________________________

          D.3  Troubleshooting Color Printing Problems

             The following sections describe problems you may encounter
             when printing a file that has color information.



                                           Troubleshooting Procedures  D-3

 





          __________________________________________________________

          D.3.1  Your Color Output is Black

             If the DECprint Utility prints your color file in
             black-and-white, check to see that your file requests color
             conversion. The file may actually request black and white.
             For more information, check the documentation for your color
             application.

          __________________________________________________________

          D.3.2  Thin Lines Don't Print

             Depending on the color selection, very thin lines appear not
             to print. You can either choose a darker color or increase
             the width of the line.

          __________________________________________________________

          D.3.3  Incorrect Colors

             The color of your file printed on the LJ250 printer is
             dramatically wrong, such as, green looks like light blue.
             This may be your first warning that one color of ink is out
             or simply that a nozzle is clogged. For information on how to
             unclog the nozzle or replace an ink cartridge, refer to the
             documentation for your printer.

             Colors appear faint when the LA324 MultiPrinter color ribbon
             requires replacement. See the printer documentation for
             information on how to replace the ribbon.

             To check for true colors, you can print the IVP:

              o DECprint Utility prints with red letters

              o Successfully prints in green

              o Installed prints in blue

             Section 2.5 explains how to run the IVP after installation.

          D-4  Troubleshooting Procedures

 





          __________________________________________________________

          D.4  Your Setup Modules Do Not Work

             DECprint Utility software does not support /FORM and /SETUP.
             If your POSTSCRIPT file requires setup modules to work
             properly, you can do either of the following:

              o Rewrite your files to be independent of setup modules,
                which increases their portability.

              o Extract the required modules into a file and include the
                name of the file on the command line.

                  $ PSPRINT/QUEUE=queue-name setupfile.PS,myfile.PS

          __________________________________________________________

          D.5  /PARAMETERS=(NUMBER_UP=2) Does Not Work

             The DECprint Utility does not support the /PARAMETERS
             qualifier. Instead, use the DECprint Utility /LAYUP qualifier
             for printing multilple pages on a sheet of paper. For
             information on the /LAYUP qualifier, see Section 4.3.2.

          __________________________________________________________

          D.6  Unexpected Page Orientation

             If you submitted your /LAYUP job to the DECprint Utility
             with /ORIENTATION=landscape and your pages print in portrait
             mode, then the file is a portrait file. Resubmit the job with
             /LAYUP=n/ORIENTATION=portrait.

             Conversely, if you request a portrait orientation and your
             pages print in landscape mode, submit your job again with
             /ORIENTATION=landscape.

             DECprint Utility software supports the use of the
             /ORIENTATION qualifier only with the /LAYUP qualifier to
             determine the order in which the page spots print. This order
             differs according to the option you select, LANDSCAPE or
             PORTRAIT.

                                           Troubleshooting Procedures  D-5

 






             Page orientation for the POSTSCRIPT file that you want
             to print using /LAYUP on your sixel printer is already
             determined. Use the /ORIENTATION qualifier to declare
             this orientation. See Sections 4.3.2 and 4.3.5 for more
             information.

          __________________________________________________________

          D.7  DECprint Utility Jobs Occupy Your Terminal for Too Long

             To keep your terminal free while using the DECprint Utility,
             you can do one of the following:

              o Submit your DECprint Utility job to a batch queue
                using the command file Batch-PSPRINT.com provided
                in SYS$COMMON:[SYSHLP.EXAMPLES.PSPRINT]. For more
                information, see Section 4.6.

              o Run dual sessions on your VT330/VT340 terminal. See the
                documentation for your video terminal for information.

          __________________________________________________________

          D.8  Faint Diagonal Lines With a Write-White Engine

             Printed output of diagonal lines one pixel wide from a
             write-white engine, such as the LN03 printer, is faint. The
             only solution is to increase the width of the line.

          __________________________________________________________

          D.9  The Position of the Image is Wrong

             If the image is not in the right place on the sheet of paper,
             check to make sure that the paper is properly aligned in
             the printer. To get the proper top of form, refer to the
             documentation for your printer.


          D-6  Troubleshooting Procedures

 













                                                                  Glossary
          ________________________________________________________________






               activity license  An LMF license type that defines the
                 number of concurrent uses allowed for a product at any
                 one time. An activity can be defined as an interactive
                 user, a running process, or a job. For example, when
                 you register four activity licenses for the DECprint
                 Utility software, LMF authorizes four users to access the
                 DECprint Utility software at the same time.

               A media size  The United States media size of 8.5 x 11.0
                 in. (or 216 x 279 mm). Also known as letter size.

               A4 media size  The European media size of 210 x 297 mm (or
                 8.26 x 11.69 in.)

               baud rate  The speed (bits/second) at which the computer
                 and the printer communicate.

               bitmap  A digitized image that can be stored, transmitted,
                 and reproduced.

               block  The smallest logically-addressable unit of data that
                 a specified device can transfer in an I/O operation (512
                 contiguous bytes for most disk devices).

                                                                Glossary-1

 






               document  In the context of a DECprint Utility command, a
                 document is an entity that signals the resetting of the
                 POSTSCRIPT interpreter. In the command line, plus signs
                 concatenate files into documents and commas separate
                 documents.

               dot  In the context of the sixel protocol, the smallest
                 displayable unit - an ink dot on paper. Dots can be
                 round, oval, square, rectangular, and small or large.

               driver  The set of code in the operating system that
                 handles the physical I/O to a device.

               execution queue  The queue with which the symbiont is
                 associated.

               font  The representation of a typeface that describes some
                 set of characters rendered in a particular point size,
                 weight, and style.

               global qualifier  A qualifier that applies to all files in
                 a job.

               host  A network node that performs services and enables
                 start up and management of peripheral devices, such as
                 printers.

               image area  The printable part of a page. On most printers,
                 you cannot print to the physical edge of the page.

               interpreter  A program in the printer or on the host that
                 converts data for a particular imaging data syntax into a
                 bitmap.

               landscape printing  A method of printing characters
                 parallel to the long edge of the paper.

               name  A descriptive identifier (ASCII string) that is
                 associated with a subject or object in the system.

          2-Glossary

 






               network  A group of computers that are connected to each
                 other by communication lines to share information and
                 resources.

               node  A network-addressable component having a unique
                 address.

               number_up  The term for printing multiple logical pages on
                 one physical sheet of paper. For example, printing 4-up
                 means that you are printing four pages on a single sheet.

               page  In the context of a printer, a page is the image you
                 are printing; you usually print one page per sheet.

               persistent parameters  System parameters that remain
                 unchanged across POSTSCRIPT jobs. Therefore, these
                 parameters persist after the host-based POSTSCRIPT
                 interpreter is reset.

               pixel  In the context of the sixel protocol, the logical
                 rectangular image area (smallest piece of an image)
                 defined by each bit of sixel data, as intended by the
                 creator software. An aspect ratio defines the size of a
                 pixel. The printer prints pixels as dots.

               pixel aspect ratio  Shape of the pixel represented as a
                 ratio of the vertical side to the horizontal side.

               portrait printing  A method of printing characters parallel
                 to the short edge of the paper. This is normal page
                 orientation for printing. For example, this page is
                 printed in a portrait orientation.

               positional qualifier  A print qualifier that affects the
                 command differently depending on its position in the
                 command line.

               POSTSCRIPT interpreter  A stored program that converts
                 POSTSCRIPT commands into page images.

                                                                Glossary-3

 






               POSTSCRIPT language  A programming language designed to
                 convey a description of virtually any desired page
                 to the printer. It can describe a page containing any
                 combination of text, graphical shapes, and digitized
                 images.

               print symbiont  In the context of the DECprint Utility, the
                 software that transfers the queued DECprint Utility jobs
                 to the sixel printer.

               printer controller mode  Terminal control sequences direct
                 output written to the terminal to the printer port
                 (attached printer) rather than to the terminal screen.

               privilege  The level of system access allowed to a user.

               protocol  The conventions or rules for the format and
                 timing of messages sent and received.

               resolution  The number of dots in a defined area.

               resource  An identifiable entity, physical or conceptual,
                 that can perform a service and can be named and accessed
                 on a network. The sharable entity can be either hardware
                 or software.

               sheet  A sheet is the piece of paper that is printed.

               sixel  A group of six vertical pixels represented by 6 bits
                 in a character code of 7 or 8 bits.

               system parameters  Values maintained within the POSTSCRIPT
                 interpreter and used by the interpreter to control
                 various system-specific features. See also persistent
                 parameters and volatile parameters.

               timeout  The expiration of the time limit in which a device
                 is to complete an I/O transfer.

          4-Glossary

 






               translator  A stored program that changes the user's data
                 syntax into a form that can be used by the printer.

               user  The person who initiates requests for service. These
                 requests are handled by the host, which forwards them to
                 the appropriate service.

               volatile parameters  System parameters that stay in effect
                 for one POSTSCRIPT print job. At the end of the DECprint
                 Utility job, volatile parameters revert to their default
                 values.




























                                                                Glossary-5

 












                                                                Index
          __________________________________________________________

          ___________________________
          A                              Color extensions (Cont.)
          ___________________________      setcmykcolor operator,
          /AFTER qualifier, 4-14             C-29
          Attached printers, 4-4, 4-7      setcolorscreen operator,
            effect of control                C-31
               character during            setcolortransfer operator
               printing, 4-5                 , C-34
          /ATTACHED qualifier, 4-8         setundercolorremoval
          ___________________________
          B                                  operator, C-37
          ___________________________    colorimage operator, C-9,
          Black generation, C-5             C-18
          ___________________________      examples for, C-12
          C                              Color images, C-9
          ___________________________    Color screens, C-9
          CMYK color, C-8                Color transfer functions,
          Color extensions                  C-9
            colorimage operator, C-18    Command syntax, 4-2
            currentblackgeneration       componentids extension,
               operator, C-21               B-5, B-6
            currentcmykcolor operator    Control characters
               , C-22                      effect with attached
            currentcolorscreen               printers, 4-5
               operator, C-23            currentblackgeneration
            currentcolortransfer            operator, C-21
               operator, C-25            currentcmykcolor operator,
            currentundercolorremoval        C-22
               operator, C-26            currentcolorscreen operator
            format, C-17                    , C-23
            setblackgeneration           currentcolortransfer
               operator, C-27               operator, C-25

                                                              Index-1

 






          currentundercolorremoval       Installation Verification
             operator, C-26                 Procedure (IVP) (Cont.)
          CYMK color, C-4                  output, 2-12
          ___________________________    ___________________________
          D                              J
          ___________________________    ___________________________
          DECprint Utility               jobname operator, B-4, B-7
            system messages, 5-1         ___________________________
          DECprint Utility command       L
             line, 4-2                   ___________________________
            attached printers, 4-4       LA210 Letterprinter, 1-3,
            queued printers, 4-3            3-3
          /DELETE qualifier, 4-17        LA324 MultiPrinter, 1-3,
          Device control library,           3-3
             A-4, A-5                    LA75 Companion printer,
          /DEVICE qualifier, 4-17           1-3, 3-3
          Device support, 4-6            /LAYUP qualifier, 4-9
          ___________________________    LJ250 Companion Color
          F                                 printer, 1-3, 3-3
          ___________________________      using transparencies
          /FORM qualifier, 4-16
          ___________________________        with, 4-22
          H                              LN03 Image software
          ___________________________      installation order with
          Hardware requirements, 1-3         DECprint Utility, 1-5
          ___________________________    LN03 PLUS Desktop Laser
          I                                 printer, 1-3, 3-3
          ___________________________    Logical name
          Installation                     for queued printing, 3-1,
            hardware requirements,
               1-3                           4-6
            order with LN03 Image        ___________________________
               software, 1-5             M
            procedure messages, 5-1      ___________________________
            required disk space, 1-5     /MEDIUM qualifier, 4-10
            sample session, 2-10         Messages
            software requirements,         descriptions, 5-2  to
               1-4                           5-14
            time required, 1-5             format, 5-1
          Installation procedure           severity level, 5-2
             questions, 2-3  to 2-9      /MESSAGES qualifier, 4-11

          Installation Verification
             Procedure (IVP)

          2-Index

 





          ___________________________
          O                              Print qualifiers (Cont.)
          ___________________________      effective at queue time,
          /ORIENTATION qualifier,            4-3
             4-13                          not supported by DECprint
          ___________________________        Utility command, 4-15
          P                                specific to DECprint
          ___________________________
          pagecount operator, B-4,           Utility command, 4-7
             B-7                         Print queues, creating, A-1
          pagesize operator, B-4         /PROCESSOR qualifer, A-6
          /PARAMETERS qualifier, 4-15    product operator, B-5, B-6
          Persistent parameters, B-4     PSPRINT$queue_DEVICE_TYPE,
          Postinstallation                  3-1, 4-6
             requirements, 3-1           PSPRINT$STARTUP
            for queued printing, 3-1       editing of, A-2  to A-4
            for VAXcluster systems,        queue setup topics, A-5
               3-4                           to A-7
          POSTSCRIPT extensions, B-1       renaming, A-2
             to B-7                      ___________________________
            componentids, B-6            Q
            portability, B-1             ___________________________
            sheetcount, B-7              Qualifiers
          POSTSCRIPT operators             different from PRINT
            begin, B-4                       command, 4-14
            end, B-4                       effective at queue time,
            jobname, B-7                     4-3
            pagecount, B-7                 not supported by DECprint
            pagesize, B-4                    Utility command, 4-15
            product, B-6                   specific to DECprint
            revision, B-7                    Utility command, 4-7
            version, B-7                 Queued printing, 4-6
            where, B-2                   Queues, creating, A-1
          Printed output                 ___________________________
            IVP, 2-12                    R
          Printer startup file           ___________________________
            setting up print queues,     Release Notes, 2-2
               A-2                       revision operator, B-5, B-7
          Printer support, 1-3           ___________________________
          Print qualifiers               S
            different from PRINT         ___________________________
               command, 4-14             Separation pages, A-6
                                         setblackgeneration operator
                                            , C-27

                                                              Index-3

 





                                         ___________________________
          setcmykcolor operator, C-29    V
          setcolorscreen operator,       ___________________________
             C-31                        version operator, B-7
          setcolortransfer operator,     VMSINSTAL procedure
             C-34                          conventions, 2-1
          setundercolorremoval             installation questions,
             operator, C-37                  2-3  to 2-9
          Setup modules                    release notes, 2-2
            with DECprint Utility        Volatile parameters, B-4

               jobs, 4-16
          /SETUP qualifier, 4-16
          sheetcount operator, B-4,
             B-7
          Software requirements, 1-4
          statusdict, B-3
          Supported devices
            device type keywords for,
               3-3
            resolution of, 3-3
          System messages, 5-1  to
             5-14
          System parameters, B-4
          System startup file, A-5
          ___________________________
          T
          ___________________________
          Terminal device type, A-6
          Terminals supported
             by DECprint Utility
             software, 1-3
          Tranparency mode
            LJ250 printer, 4-22
          Troubleshooting procedures,
             D-1  to D-6
          ___________________________
          U
          ___________________________
          UNDEF error message, B-1
          Undefined name
            statusdict, B-3
            using where operator, B-2
          Undercolor removal, C-5

          4-Index
