Okay, basically, these utils are just Carmack's source recompiled for OS/2, with a couple modifications. The only ones you need to know about are that there are four additional command-line parameters: -nopop This one disables the Point Off Plane error checking. It'll still mention it, but no action will be taken. -node Basically does the same thing for Degenerate Edge errors. -nobr Same as above, but for BOGUS_RANGE errors... I have no idea what one of these is, but this'll disable it. -nonc Turns off Non-Convex errors. This probably isn't a good idea, but the option's there if you want it. I'm gonna keep working on this... Keep an eye out for updates as I keep playing with the source.