Picture Formats All pictures are stored in data/datgr.dat to avoid palette problems and for greater compression. The directories named data/pics_* contain data about positions of pictures, specified by name of file main data file (think of entries in the Doom WAD file). For each directory, there are different specifications: data/pics_a - move objects pictures: <name>f - fight pictures, <name>m - moving pictures, <name>g - face of soldier. data/pics_bd - building pictures. data/pics_d - Doodad pictures. data/pics_b - background pictures; naming of files should be revised.