dmp1666r - patches DOOM.WAD v1.666 to correct the E3M9 sector error.
Lloyd Shelby - 09/14/94 - lshelby@indy.net

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* The author assumes absolutely no responsibility for the use of this *
* program or effects / side effects thereof. This program is NOT an   *
* official or unofficial product of iD software or iD's affiliates    *
* and will not be supported by them.  This program will only work     *
* with the official 1.666 DOOM.WAD as provided by iD software. Before *
* running this utility, make a backup copy of your DOOM.WAD. DOOM is  *
* a copyrighted trademark of iD software.                             *
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Before using this program, make a backup copy of DOOM.WAD. This 
utility must be used with the DOOM 1.666 registered wad from iD 
software (patch the registered 1.2 wad with iDs 1.666 patch). 
This utility must be in the same directory as DOOM.WAD (usually 
your normal DOOM directory) and DOOM.WAD must be writeable (not 
read only). This program simply changes the byte at offset 0026F90E 
from a "06" to a "00", fixing the "P_PlayerInSpecialSector" error
in E3M9.