Contents of the "vms" sub-archive for UnZip 5.3 and later:

  Contents            this file
  README              general VMS info about using UnZip and zipfiles
  unzip_def.rnh       UnZip default help page, RUNOFF format
  unzip_cli.help      UnZip VMSCLI help page, TPU format
  unzipsfx.hlp        UnZipSFX pre-formatted help page
  cvthelp.tpu         TPU macro file to convert .help file to RUNOFF format
  cmdline.c           VMS-style command-line-interface code (if VMSCLI defined)
  unz_cli.cld         more VMS-command-line stuff (if VMSCLI defined)
  vms.c               VMS file manipulation code
  vms.h               VMS header file for UnZip
  vmsdefs.h           VMS system declarations (missing C compiler support)
  make_unz.com        command file to make UnZip with GNU or DEC C on VAX or AXP
  link_unz.com        command file to (re)link UnZip and UnZipSFX
  descrip.mms         MMK/MMS makefile for UnZip/ZipInfo and UnZipSFX
  unzip.opt           options file used for linking unzip
  unzipsfx.opt        options file used for linking unzipsfx
  makesfx.com         command file to create self-extracting archives

MAKE/VMS is no longer supported since MMK (MMS clone by Matt Madison/MadGoat
Enterprises, compatible with descrip.mms) is both free and becoming quite
popular.  MMK is available by anonymous ftp from ftp.spc.edu/ftp.wku.edu and
by mailserver at lists.wku.edu.  Check VMS newsgroups for announcements and
exact location.

The MAKE_UNZ.COM command file accepts compilation options in a LOCAL_UNZIP
symbol or logical; the format is "VMSCLI,RETURN_CODES" (for example).
DESCRIP.MMS must be edited in order to use special options.