Creates a subprocess of the current process. The context of the
    subprocess is copied from the current process. You can use the
    SPAWN command to leave SYSMAN temporarily, perform other tasks
    (such as displaying a directory listing or printing a file), and
    return to SYSMAN.

    Note that SPAWN performs actions on the local node only. If you
    want to execute DCL commands or command procedures throughout
    your environment, use the DO command.

    Requires TMPMBX or PRMMBX user privilege. The SPAWN command does
    not manage terminal characteristics. You cannot use the SPAWN and
    ATTACH commands if your terminal has an associated mailbox.

    Format

      SPAWN  [command-string]