SHELL

Purpose:    Sets an alternative command processor name.

Syntax:     SHELL = [drive:][path]filename [parms]
            Where, filename is a command processor name,
                   parms is the command line to be passed to the program.

By default: SHELL = command.com  /P

Note:
     Refer to the description of the Command.com and the initial value of
the COMSPEC environment variable. In case of failing to find the specified
shell or an error while running it, the system will prompt:

        "Shell ? _"

     In this case, the name of the program together with its parameters
should be specified, e.g. "\cmd\command.com /p/e:512", or alternatively, the
[Ctrl-Break] may be used for cancelling the start-up.