WSUBST.EXE is a small utility that will substitute wall
texture names in a Doom 1 or 2 wad. IT IS NOT INTENDED TO BE USED ON 
THE MAIN DOOM IWAD BUT MAY BE SO USED AT YOUR OWN RISK. It can be 
useful to replace all occurrences of a texture not allowed by one 
version or the other. The file WSUBST.DAT must contain lines of the
form: "ASHWALL = ASHWALL1". White space may be used freely. The line shown
will cause the ASHWALL1 texture to be substituted everywhere the
ASHWALL texture occurs. There are no comment facilities currently.

	WSUBST syntax is simple:

	WSUBST wadname.wad [n] [u] [l]

	Use the optional n, u, or l parameter to restrict substitution
to normal, upper, or lower textures or a combination of the three. The
default is to substitute anywhere. Sorry, but restricting to 1st or
2nd sidedef is more difficult and requires logical operator syntax to
combine with n,u,l so has been left out at this time.

       WARNING:	This program is in beta stage. Back up all work before
using WSUBST or suffer the consequences. 

	A companion utility FSUBST.EXE does the same thing for
flats and allows restriction to ceilings and floors. It is available
as DMFSUB.ZIP in Lib 12 (may be in 8 in the future) in Gamers on CIS.
Both tools are intended to be parts of a planned map texture editing
tool. Comments on what you'd like to see in this tool are welcome. I
can be reached on CIS as Jim F. Flynn - 72713,3334. Auto alignment, 
substituting marked textures, and in-room texture viewing(hopefully)
I know about <G>.).