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

   patch doom.exe doomlt.exe

A new executable (DOOMLT.EXE) will appear. Place it in your DOOM (or
DOOM II ) directory to play and record v1.91 demos.

This patch has some differences compared to the one by the v1.91 team: 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 for v1.91.
