i LibPNG_JFP, programming, image (de)compression library using the Portable Network Graphics (PNG) standard   
 LibPNG V1.2.8 # http://www.vsm.com.au/ftp/jfp/kits/ 2  Tous droits rservs 2003 Jean-Franois PIRONNE    ] LibJPEG is a image de/compression library using the Portable Network Graphics (PNG) standard  4 used by several software packages, including Python.  _ By default, the installation procedure installs this library package in the SYS$COMMON:[LIBPNG] _ directory. To install it in another directory, dev:[dir], use the /DESTINATION parameter of the g PRODUCT command. In this case, the library package will be installed in the dev:[dir.LIBPNG] directory.    Installation  H    1. Make the directory which holds the ZIP file your default directory0    2. Extract the PCSI kit from the ZIP archive.  ! $ UNZIP "-V" LIBPNG-V0102-8-1.ZIP   =    3. Install the library package to your chosen destination.   # $ PRODUCT INSTALL libpng  (default)      or ...  / $ PRODUCT INSTALL libpng /DESTINATION=dev:[dir]   R    4. Finally, run the DCL procedure STARTUP.COM to define the necessary logicals.  I (You might want to add the relevant line to your SYSTARTUP_VMS.COM file.)   ( $ @SYS$COMMON:[LIBPNG]STARTUP  (default)   or ...   $ @dev:[dir.LIBPNG]STARTUP    