This archive contains the following:

   JMenu.doc         - the documentation
   JMenu             - the program
   example1          - a simple script which shows the use of JMenu
   example1.menu     - menu definitions used by example1
   script1           - a simple script used by example1
   script2           - a simple script used by example1
   unpack            - a more sophisticated (and complicated) use of JMenu
                          (see below for a more detailed explanation)
   unpack.menu1      - menu definitions used by unpack

Read the documentation (it's short), try example1 and then check out unpack.

Unpack is a script which you start from the CLI.  It allows you to select
an archive program and a file(s) to unpack. 

   Format:   UNPACK [SOURCE <directory name>] [DEST <directory name>]
   Template: UNPACK "SOURCE/K,DEST/K"

If a source directory is not given it is assumed dh1:telecom/downloads/
If a destination directory is not given it is assumed RAM:
If source is a subdirectory it must end with a "/"
To use the archive programs you must already have them available in your
current search path.