05/31/91
         [v2.2] When displaying the High Scores, system would hang, in
                Local mode.
                
                Game will not be saved if there were no moves made.

                Changed some internal variables relating to time left.
                 
                Added support for non-standard IRQ numbers (other than
                IRQ3/IRQ4). See docs for implementation.

05/05/91
         [v2.1] Door would hang, in local mode, when returning to BBS.                

03/24/91
         [v2.0] When presented with the "Press ENTER or E to exit" message,
                pressing E caused another "Press ENTER to continue" message
                to appear. Eliminated the second "Press ENTER..." message
                after you press an E to exit.             
                
                When using DORINFOx.DEF, the door would stop at the start
                of the game and require a key press to continue.

                When using DORINFOx.DEF, the BBS NAME was not being picked
                up from the configuration file and was not picking up the 
                correct NODE number from the configuration file.

03/10/91
         [v1.9] Several problems related to DORINFOx.DEF 
                were corrected.

02/23/91
         [v1.8] Internal changes to speed up program.

                Will now test for maximum games reached BEFORE asking
                if you want to play another game.

                Corrected "hung system" when responding to a 
                "Press ENTER to COntinue, E to end" message.

02/12/91
         [v1.7] Error 52 encountered when leaving the game, under
                a network environment.

02/08/91
         [v1.6] Internal routine changes.


01/13/91
         [v1.5] Added error trapping routines
        
                Changed method of creating filenames that hold the 
                "saved" game. This will accomodate 1-word handles.

01/05/91
         [v1.4] "Illegal Function Call" error msg generated when Time
                Remaining was greater than 999. Seems some Sysops give 
                themselves large amounts of time. 

01/02/91 [v1.3] In unregistered version program would produce a "Bad
                File Name or number..." error msg when exiting the game.

                The instructions question will now default to "N".

01/01/91
         [v1.2] Problem with last page of instructions not remaining
                on screen.
               
                Several other internal changes to handle errors.

12/29/90
         [v1.1] Added automatic ANSI compatability check
                
                Added a check for time remaining

                DORINFOx.DEF now handles security levels > 32767

                "Warning x Minutes Remain..." message messed up display -
                Message has been eliminated.

                When saving a game, the pgm was always using "SYSOPxxx" as 
                the filename for the saved file. It should have had the 
                first 5 characters of the callers name. This still worked
                as it should have just a little cleaner looking now.

12/15/90
         [v1.0] Initial release