DMCDINI.ZIP (unless the Sysop changes it...) contains 2 files :

DOOMCAD.INI 
INITXT.TXT   {this file}

This DOOMCAD.INI file contains all known triggers for Doom 1.2. 
It is meant to replace the original DOOMCAD.INI that came with v4.3.
Unzip and copy over existing DOOMCAD.INI. I strongly recommend you create
a backup copy of your current .INI file somewhere safe, like in a \BACKUP 
subdirectory. That way, you won't have to go back and extract it from 
DMCAD.zip if anything wierd happens. I have had no problems replacing the 
old file and using the new one, but I wouldn't feel right if I didn't urge 
you to make a backup...

Thanks MUCHO to Jim F. Flynn, for a lot of the info and testing. He should 
be uploading a description file soon.

I also urge you to get a copy of Brian McKimens' file LYNTYP10.TXT, 
available in the Compuserve Gamers+ Forum as DMLTYP.ZIP, where much
of Jim's info came from.

Note to get started :

T&T change to Sw. or Tr. means sector and texture type change to either
Switch sector, or Trigger sector. You'll have to get Brian's document for
further info.