To apply this patch make sure PATCH.COM and DOOM.EXE (or DOOM2.EXE) are
present in the directory, and type the following:

   patch doom.exe doomlt.exe

or

   patch doom2.exe doom2lt.exe

A new executable (DOOMLT.EXE or DOOM2LT) will appear. Place it in your DOOM
(or DOOM II) directory to play and record v1.11 (longtics) demos.

This patch has some differences compared to the one by the longtics team: It
changes the banner version to v1.11 (instead of v1.91), it does not alter nor
force the startup "modified" message, nor can it disable it, and it does not
change the "wrong version" message for when a demo is not v1.11 (longtics).

NOTE: This hack won't work with the DOS executables that accompany Final DOOM
or The Ultimate DOOM.