Int 15 Fn 0F  - Multidos Plus - Execute A Multidos Plus Command            [T]

   AH = 0Fh
   DS:BX -> ASCIZ command

Return: after command has been processed

Notes: specified string is executed as if it had been typed at the MultiDOS
     command prompt
   the task is placed on a queue which MultiDOS examines periodically and
     is suspended until MultiDOS has processed the command
   all lowercase characters up to the first blank are converted to upper
     case within the given buffer