Defines starting with `f' in windoom

• false src/doomtype.h:37
• FASTDARK src/p_spec.h:178
• FATSPREAD src/p_enemy.c:1349
• FB src/wi_stuff.c:286
• FLOORSPEED src/p_spec.h:599
• FRICTION src/p_mobj.c:115
• FUZZOFF src/r_draw.c:261
• FUZZTABLE src/r_draw.c:260