$ as     = type this message
$ at     = @ "file under work"
$ ba     = basic
$ di     = directory
$ du     = dump
$ ed     = edit
$ fo     = fortran
$ li     = link
$ ma     = macro
$ nve    = set noverify
$ pa     = pascal
$ pr     = print
$ pu     = purge
$ ru     = run
$ se     = set file def
$ tr     = transfer file def to #xxx (from #xxx or name)
$ ty     = type
$ ve     = set verify
$ wh*at  = what file is being worked on?