1 SPAWN
  Syntax: SPAWN [command]

  Alias for `SHELL'.  Spawns a DCL (VMS) or  Shell (Unix) command. You can
  specify the shell on Unix machines  using the `SET SHELL' command. If no
  command is given a new process is created. Use the command `Return' (VMS)
  or `exit' (Unix) to return to  Mn_Fit  when you have  finished  in  the
  subprocess. On VMS  you can  also  `ATTACH' to  the main  process and
  then use  `ATTACH' in Mn_Fit to re-enter the subprocess if you wish.

