Adding custom sprites

Sprites in DOOM are easy to edit with the right tool. Usually, they are exported/imported to and from .bmp images via DeuTex and it's Windows counterpart WinTex. On the Macintosh Port, graphics are edited on a slightly cruder interface via the Deimos program(the name standing for 'Doom Editing Interface for the Macintosh Operating System'). Any way, the editable sprites have a four-letter code followed by a certain rotation.