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║ GT-HELP ║ GTDOOR.BAT - the batch file that gives you shell access
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    The GTDOOR.BAT file is a batch file executed by GT when somebody that
    has been granted Dos Shell access (usually only the sysop) executes the
    Shell command.

    The standard gtdoor.bat, operating through CTTY, is :

        echo off    --- avoids displaying subsequent commands
        %1 COM%2    --- %1 is either REM (local user) or CTTY (remote user)
                        %2 is the COM port number, usually 1 or 2.
        command     --- causes command.com to execute
        %1 con      --- puts CTTY back to console when operating remotely.



