01/13/91
         [v1.4] Added error trapping routines

01/05/91
         [v1.3] "Illegal Function Call" error msg was being generated when
                the Time Remaining value was greater than 999. Seems some
                Sysops like to give them large values. Fixed

01/02/91
         [v1.2] In unregistered versions program would produce a "Bad
                file name or number..." error msg when leaving the game.

01/01/91
         [v1.1] Problem with last display of instructions not remaining
                on the screen.

                Several internal programming changes.

12/29/90
         [v1.0] Initial release