Wow, quite a response. Good to see you friendlier MAMEWorld.net forum guys on here too

The banned games were King Of Fighters 2003, Samurai Shodown 5, and SNK vs Capcom: Chaos. And don't worry, the entries are safe and available at
http://home.comcast.net/~plotor/banned.dat so feel free to grab it and add them back to the command.dat if you like.
Buddabing, the source code to display the command.dat is burried in the various changes to the original MAME source contained in MAME 32 Plus and MAME 32 FX. I know that the ui_font.c file is integral as I have actually submitted some changes to that file in order to alter the glyphs, but I am clueless as to which other files are absolutely necessary to the rendering of those glyphs within MAME.
Anyway, I've begun to do some new things with the command.dat. I have begun adding entries that serve as mini game manuals, for Pac-Man and Ms. Pac-Man so far. And if you're a video game history buff, check out the command list for Pong for a laugh.