/VMS_DEVELOPMENT[=value]
  /NOVMS_DEVELOPMENT[=value]

   o Ada defines the data types QUADWORD and INTEGER_QUAD as INTEGER_64
     if /ALPHA_AXP and /VMS_DEVELOPMENT is specified and as
     UNSIGEND_QUADWORD otherwise.

   o BLISS defines routines as "external routine routine-name : novalue"
     if /VMS_DEVELOPMENT is not specified and generates macros or keywordmacros
     otherwise.

   o BLISS' and BLISSF's generation of certain "literal"s for the sizes of
     structures or unions depends on this qualifier.

   o BLISSF ignores user fill fields if /VMS_DEVELOPMENT is specified.

   o BLISSF ignores nested structures if /VMS_DEVELOPMENT is specified.

   o BLISSF generates macros instead of fields for certain level one items.

   o CC handles user fill depending on /VMS_DEVELOPMENT.

   o CC handles references to aggregates within typedef'd aggregates
     different when /VMS_DEVELOPMENT is specified.

   o See also /C_DEVELOPMENT

   o Pascal prefixes "read node" modules with PASCAL$ if /VMS_DEVELOPMENT
     is specified.

   o Pascal suppresses the generation of certain fill fields if
     /VMS_DEVELOPMENT is specified.

   o Pascal appends "$TYPE" to data types that have no "$" in their name
     if /VMS_DEVELOPMENT is specified.

   o Pascal emits an error message if it encounters a complex data type
     if /VMS_DEVELOPMENT is not specified.

   o Pascal generates the type "$DEFPTR" for user data types if
     /VMS_DEVELOPMENT is specified and generates the actual type if not.

   The value will be ignored.