diff --git a/Source/Am_map.c b/Source/am_map.c
similarity index 100%
rename from Source/Am_map.c
rename to Source/am_map.c
diff --git a/Source/Am_map.h b/Source/am_map.h
similarity index 100%
rename from Source/Am_map.h
rename to Source/am_map.h
diff --git a/Source/D_deh.c b/Source/d_deh.c
similarity index 100%
rename from Source/D_deh.c
rename to Source/d_deh.c
diff --git a/Source/D_deh.h b/Source/d_deh.h
similarity index 100%
rename from Source/D_deh.h
rename to Source/d_deh.h
diff --git a/Source/D_englsh.h b/Source/d_englsh.h
similarity index 100%
rename from Source/D_englsh.h
rename to Source/d_englsh.h
diff --git a/Source/D_event.h b/Source/d_event.h
similarity index 100%
rename from Source/D_event.h
rename to Source/d_event.h
diff --git a/Source/D_french.h b/Source/d_french.h
similarity index 100%
rename from Source/D_french.h
rename to Source/d_french.h
diff --git a/Source/D_items.c b/Source/d_items.c
similarity index 100%
rename from Source/D_items.c
rename to Source/d_items.c
diff --git a/Source/D_items.h b/Source/d_items.h
similarity index 100%
rename from Source/D_items.h
rename to Source/d_items.h
diff --git a/Source/D_main.c b/Source/d_main.c
similarity index 100%
rename from Source/D_main.c
rename to Source/d_main.c
diff --git a/Source/D_main.h b/Source/d_main.h
similarity index 100%
rename from Source/D_main.h
rename to Source/d_main.h
diff --git a/Source/D_net.c b/Source/d_net.c
similarity index 100%
rename from Source/D_net.c
rename to Source/d_net.c
diff --git a/Source/D_net.h b/Source/d_net.h
similarity index 100%
rename from Source/D_net.h
rename to Source/d_net.h
diff --git a/Source/D_player.h b/Source/d_player.h
similarity index 100%
rename from Source/D_player.h
rename to Source/d_player.h
diff --git a/Source/D_textur.h b/Source/d_textur.h
similarity index 100%
rename from Source/D_textur.h
rename to Source/d_textur.h
diff --git a/Source/D_think.h b/Source/d_think.h
similarity index 100%
rename from Source/D_think.h
rename to Source/d_think.h
diff --git a/Source/D_ticcmd.h b/Source/d_ticcmd.h
similarity index 100%
rename from Source/D_ticcmd.h
rename to Source/d_ticcmd.h
diff --git a/Source/Doomdata.h b/Source/doomdata.h
similarity index 100%
rename from Source/Doomdata.h
rename to Source/doomdata.h
diff --git a/Source/Doomdef.c b/Source/doomdef.c
similarity index 100%
rename from Source/Doomdef.c
rename to Source/doomdef.c
diff --git a/Source/Doomdef.h b/Source/doomdef.h
similarity index 100%
rename from Source/Doomdef.h
rename to Source/doomdef.h
diff --git a/Source/Doomstat.c b/Source/doomstat.c
similarity index 100%
rename from Source/Doomstat.c
rename to Source/doomstat.c
diff --git a/Source/Doomstat.h b/Source/doomstat.h
similarity index 100%
rename from Source/Doomstat.h
rename to Source/doomstat.h
diff --git a/Source/Doomtype.h b/Source/doomtype.h
similarity index 100%
rename from Source/Doomtype.h
rename to Source/doomtype.h
diff --git a/Source/Dstrings.c b/Source/dstrings.c
similarity index 100%
rename from Source/Dstrings.c
rename to Source/dstrings.c
diff --git a/Source/Dstrings.h b/Source/dstrings.h
similarity index 100%
rename from Source/Dstrings.h
rename to Source/dstrings.h
diff --git a/Source/F_finale.c b/Source/f_finale.c
similarity index 100%
rename from Source/F_finale.c
rename to Source/f_finale.c
diff --git a/Source/F_finale.h b/Source/f_finale.h
similarity index 100%
rename from Source/F_finale.h
rename to Source/f_finale.h
diff --git a/Source/F_wipe.c b/Source/f_wipe.c
similarity index 100%
rename from Source/F_wipe.c
rename to Source/f_wipe.c
diff --git a/Source/F_wipe.h b/Source/f_wipe.h
similarity index 100%
rename from Source/F_wipe.h
rename to Source/f_wipe.h
diff --git a/Source/G_game.c b/Source/g_game.c
similarity index 100%
rename from Source/G_game.c
rename to Source/g_game.c
diff --git a/Source/G_game.h b/Source/g_game.h
similarity index 100%
rename from Source/G_game.h
rename to Source/g_game.h
diff --git a/Source/Hu_lib.c b/Source/hu_lib.c
similarity index 100%
rename from Source/Hu_lib.c
rename to Source/hu_lib.c
diff --git a/Source/Hu_lib.h b/Source/hu_lib.h
similarity index 100%
rename from Source/Hu_lib.h
rename to Source/hu_lib.h
diff --git a/Source/Hu_stuff.c b/Source/hu_stuff.c
similarity index 100%
rename from Source/Hu_stuff.c
rename to Source/hu_stuff.c
diff --git a/Source/Hu_stuff.h b/Source/hu_stuff.h
similarity index 100%
rename from Source/Hu_stuff.h
rename to Source/hu_stuff.h
diff --git a/Source/I_main.c b/Source/i_main.c
similarity index 100%
rename from Source/I_main.c
rename to Source/i_main.c
diff --git a/Source/I_net.c b/Source/i_net.c
similarity index 100%
rename from Source/I_net.c
rename to Source/i_net.c
diff --git a/Source/I_net.h b/Source/i_net.h
similarity index 100%
rename from Source/I_net.h
rename to Source/i_net.h
diff --git a/Source/I_sound.c b/Source/i_sound.c
similarity index 100%
rename from Source/I_sound.c
rename to Source/i_sound.c
diff --git a/Source/I_sound.h b/Source/i_sound.h
similarity index 100%
rename from Source/I_sound.h
rename to Source/i_sound.h
diff --git a/Source/I_system.c b/Source/i_system.c
similarity index 100%
rename from Source/I_system.c
rename to Source/i_system.c
diff --git a/Source/I_system.h b/Source/i_system.h
similarity index 100%
rename from Source/I_system.h
rename to Source/i_system.h
diff --git a/Source/I_video.c b/Source/i_video.c
similarity index 100%
rename from Source/I_video.c
rename to Source/i_video.c
diff --git a/Source/I_video.h b/Source/i_video.h
similarity index 100%
rename from Source/I_video.h
rename to Source/i_video.h
diff --git a/Source/Info.c b/Source/info.c
similarity index 100%
rename from Source/Info.c
rename to Source/info.c
diff --git a/Source/Info.h b/Source/info.h
similarity index 100%
rename from Source/Info.h
rename to Source/info.h
diff --git a/Source/M_argv.c b/Source/m_argv.c
similarity index 100%
rename from Source/M_argv.c
rename to Source/m_argv.c
diff --git a/Source/M_argv.h b/Source/m_argv.h
similarity index 100%
rename from Source/M_argv.h
rename to Source/m_argv.h
diff --git a/Source/M_bbox.c b/Source/m_bbox.c
similarity index 100%
rename from Source/M_bbox.c
rename to Source/m_bbox.c
diff --git a/Source/M_bbox.h b/Source/m_bbox.h
similarity index 100%
rename from Source/M_bbox.h
rename to Source/m_bbox.h
diff --git a/Source/M_cheat.c b/Source/m_cheat.c
similarity index 100%
rename from Source/M_cheat.c
rename to Source/m_cheat.c
diff --git a/Source/M_cheat.h b/Source/m_cheat.h
similarity index 100%
rename from Source/M_cheat.h
rename to Source/m_cheat.h
diff --git a/Source/M_fixed.h b/Source/m_fixed.h
similarity index 100%
rename from Source/M_fixed.h
rename to Source/m_fixed.h
diff --git a/Source/M_menu.c b/Source/m_menu.c
similarity index 100%
rename from Source/M_menu.c
rename to Source/m_menu.c
diff --git a/Source/M_menu.h b/Source/m_menu.h
similarity index 100%
rename from Source/M_menu.h
rename to Source/m_menu.h
diff --git a/Source/M_misc.c b/Source/m_misc.c
similarity index 100%
rename from Source/M_misc.c
rename to Source/m_misc.c
diff --git a/Source/M_misc.h b/Source/m_misc.h
similarity index 100%
rename from Source/M_misc.h
rename to Source/m_misc.h
diff --git a/Source/M_random.c b/Source/m_random.c
similarity index 100%
rename from Source/M_random.c
rename to Source/m_random.c
diff --git a/Source/M_random.h b/Source/m_random.h
similarity index 100%
rename from Source/M_random.h
rename to Source/m_random.h
diff --git a/Source/M_swap.h b/Source/m_swap.h
similarity index 100%
rename from Source/M_swap.h
rename to Source/m_swap.h
diff --git a/Source/Mmus2mid.c b/Source/mmus2mid.c
similarity index 100%
rename from Source/Mmus2mid.c
rename to Source/mmus2mid.c
diff --git a/Source/Mmus2mid.h b/Source/mmus2mid.h
similarity index 100%
rename from Source/Mmus2mid.h
rename to Source/mmus2mid.h
diff --git a/Source/P_ceilng.c b/Source/p_ceilng.c
similarity index 100%
rename from Source/P_ceilng.c
rename to Source/p_ceilng.c
diff --git a/Source/P_doors.c b/Source/p_doors.c
similarity index 100%
rename from Source/P_doors.c
rename to Source/p_doors.c
diff --git a/Source/P_enemy.c b/Source/p_enemy.c
similarity index 100%
rename from Source/P_enemy.c
rename to Source/p_enemy.c
diff --git a/Source/P_enemy.h b/Source/p_enemy.h
similarity index 100%
rename from Source/P_enemy.h
rename to Source/p_enemy.h
diff --git a/Source/P_floor.c b/Source/p_floor.c
similarity index 100%
rename from Source/P_floor.c
rename to Source/p_floor.c
diff --git a/Source/P_genlin.c b/Source/p_genlin.c
similarity index 100%
rename from Source/P_genlin.c
rename to Source/p_genlin.c
diff --git a/Source/P_inter.c b/Source/p_inter.c
similarity index 100%
rename from Source/P_inter.c
rename to Source/p_inter.c
diff --git a/Source/P_inter.h b/Source/p_inter.h
similarity index 100%
rename from Source/P_inter.h
rename to Source/p_inter.h
diff --git a/Source/P_lights.c b/Source/p_lights.c
similarity index 100%
rename from Source/P_lights.c
rename to Source/p_lights.c
diff --git a/Source/P_map.c b/Source/p_map.c
similarity index 100%
rename from Source/P_map.c
rename to Source/p_map.c
diff --git a/Source/P_map.h b/Source/p_map.h
similarity index 100%
rename from Source/P_map.h
rename to Source/p_map.h
diff --git a/Source/P_maputl.c b/Source/p_maputl.c
similarity index 100%
rename from Source/P_maputl.c
rename to Source/p_maputl.c
diff --git a/Source/P_maputl.h b/Source/p_maputl.h
similarity index 100%
rename from Source/P_maputl.h
rename to Source/p_maputl.h
diff --git a/Source/P_mobj.c b/Source/p_mobj.c
similarity index 100%
rename from Source/P_mobj.c
rename to Source/p_mobj.c
diff --git a/Source/P_mobj.h b/Source/p_mobj.h
similarity index 100%
rename from Source/P_mobj.h
rename to Source/p_mobj.h
diff --git a/Source/P_plats.c b/Source/p_plats.c
similarity index 100%
rename from Source/P_plats.c
rename to Source/p_plats.c
diff --git a/Source/P_pspr.c b/Source/p_pspr.c
similarity index 100%
rename from Source/P_pspr.c
rename to Source/p_pspr.c
diff --git a/Source/P_pspr.h b/Source/p_pspr.h
similarity index 100%
rename from Source/P_pspr.h
rename to Source/p_pspr.h
diff --git a/Source/P_saveg.c b/Source/p_saveg.c
similarity index 100%
rename from Source/P_saveg.c
rename to Source/p_saveg.c
diff --git a/Source/P_saveg.h b/Source/p_saveg.h
similarity index 100%
rename from Source/P_saveg.h
rename to Source/p_saveg.h
diff --git a/Source/P_setup.c b/Source/p_setup.c
similarity index 100%
rename from Source/P_setup.c
rename to Source/p_setup.c
diff --git a/Source/P_setup.h b/Source/p_setup.h
similarity index 100%
rename from Source/P_setup.h
rename to Source/p_setup.h
diff --git a/Source/P_sight.c b/Source/p_sight.c
similarity index 100%
rename from Source/P_sight.c
rename to Source/p_sight.c
diff --git a/Source/P_spec.c b/Source/p_spec.c
similarity index 100%
rename from Source/P_spec.c
rename to Source/p_spec.c
diff --git a/Source/P_spec.h b/Source/p_spec.h
similarity index 100%
rename from Source/P_spec.h
rename to Source/p_spec.h
diff --git a/Source/P_switch.c b/Source/p_switch.c
similarity index 100%
rename from Source/P_switch.c
rename to Source/p_switch.c
diff --git a/Source/P_telept.c b/Source/p_telept.c
similarity index 100%
rename from Source/P_telept.c
rename to Source/p_telept.c
diff --git a/Source/P_tick.c b/Source/p_tick.c
similarity index 100%
rename from Source/P_tick.c
rename to Source/p_tick.c
diff --git a/Source/P_tick.h b/Source/p_tick.h
similarity index 100%
rename from Source/P_tick.h
rename to Source/p_tick.h
diff --git a/Source/P_user.c b/Source/p_user.c
similarity index 100%
rename from Source/P_user.c
rename to Source/p_user.c
diff --git a/Source/P_user.h b/Source/p_user.h
similarity index 100%
rename from Source/P_user.h
rename to Source/p_user.h
diff --git a/Source/R_bsp.c b/Source/r_bsp.c
similarity index 100%
rename from Source/R_bsp.c
rename to Source/r_bsp.c
diff --git a/Source/R_bsp.h b/Source/r_bsp.h
similarity index 100%
rename from Source/R_bsp.h
rename to Source/r_bsp.h
diff --git a/Source/R_data.c b/Source/r_data.c
similarity index 100%
rename from Source/R_data.c
rename to Source/r_data.c
diff --git a/Source/R_data.h b/Source/r_data.h
similarity index 100%
rename from Source/R_data.h
rename to Source/r_data.h
diff --git a/Source/R_defs.h b/Source/r_defs.h
similarity index 100%
rename from Source/R_defs.h
rename to Source/r_defs.h
diff --git a/Source/R_draw.c b/Source/r_draw.c
similarity index 100%
rename from Source/R_draw.c
rename to Source/r_draw.c
diff --git a/Source/R_draw.h b/Source/r_draw.h
similarity index 100%
rename from Source/R_draw.h
rename to Source/r_draw.h
diff --git a/Source/R_main.c b/Source/r_main.c
similarity index 100%
rename from Source/R_main.c
rename to Source/r_main.c
diff --git a/Source/R_main.h b/Source/r_main.h
similarity index 100%
rename from Source/R_main.h
rename to Source/r_main.h
diff --git a/Source/R_plane.c b/Source/r_plane.c
similarity index 100%
rename from Source/R_plane.c
rename to Source/r_plane.c
diff --git a/Source/R_plane.h b/Source/r_plane.h
similarity index 100%
rename from Source/R_plane.h
rename to Source/r_plane.h
diff --git a/Source/R_segs.c b/Source/r_segs.c
similarity index 100%
rename from Source/R_segs.c
rename to Source/r_segs.c
diff --git a/Source/R_segs.h b/Source/r_segs.h
similarity index 100%
rename from Source/R_segs.h
rename to Source/r_segs.h
diff --git a/Source/R_sky.c b/Source/r_sky.c
similarity index 100%
rename from Source/R_sky.c
rename to Source/r_sky.c
diff --git a/Source/R_sky.h b/Source/r_sky.h
similarity index 100%
rename from Source/R_sky.h
rename to Source/r_sky.h
diff --git a/Source/R_state.h b/Source/r_state.h
similarity index 100%
rename from Source/R_state.h
rename to Source/r_state.h
diff --git a/Source/R_things.c b/Source/r_things.c
similarity index 100%
rename from Source/R_things.c
rename to Source/r_things.c
diff --git a/Source/R_things.h b/Source/r_things.h
similarity index 100%
rename from Source/R_things.h
rename to Source/r_things.h
diff --git a/Source/S_sound.c b/Source/s_sound.c
similarity index 100%
rename from Source/S_sound.c
rename to Source/s_sound.c
diff --git a/Source/S_sound.h b/Source/s_sound.h
similarity index 100%
rename from Source/S_sound.h
rename to Source/s_sound.h
diff --git a/Source/Sounds.c b/Source/sounds.c
similarity index 100%
rename from Source/Sounds.c
rename to Source/sounds.c
diff --git a/Source/Sounds.h b/Source/sounds.h
similarity index 100%
rename from Source/Sounds.h
rename to Source/sounds.h
diff --git a/Source/St_lib.c b/Source/st_lib.c
similarity index 100%
rename from Source/St_lib.c
rename to Source/st_lib.c
diff --git a/Source/St_lib.h b/Source/st_lib.h
similarity index 100%
rename from Source/St_lib.h
rename to Source/st_lib.h
diff --git a/Source/St_stuff.c b/Source/st_stuff.c
similarity index 100%
rename from Source/St_stuff.c
rename to Source/st_stuff.c
diff --git a/Source/St_stuff.h b/Source/st_stuff.h
similarity index 100%
rename from Source/St_stuff.h
rename to Source/st_stuff.h
diff --git a/Source/Tables.c b/Source/tables.c
similarity index 100%
rename from Source/Tables.c
rename to Source/tables.c
diff --git a/Source/Tables.h b/Source/tables.h
similarity index 100%
rename from Source/Tables.h
rename to Source/tables.h
diff --git a/Source/V_video.c b/Source/v_video.c
similarity index 100%
rename from Source/V_video.c
rename to Source/v_video.c
diff --git a/Source/V_video.h b/Source/v_video.h
similarity index 100%
rename from Source/V_video.h
rename to Source/v_video.h
diff --git a/Source/Version.c b/Source/version.c
similarity index 100%
rename from Source/Version.c
rename to Source/version.c
diff --git a/Source/Version.h b/Source/version.h
similarity index 100%
rename from Source/Version.h
rename to Source/version.h
diff --git a/Source/W_wad.c b/Source/w_wad.c
similarity index 100%
rename from Source/W_wad.c
rename to Source/w_wad.c
diff --git a/Source/W_wad.h b/Source/w_wad.h
similarity index 100%
rename from Source/W_wad.h
rename to Source/w_wad.h
diff --git a/Source/Wi_stuff.c b/Source/wi_stuff.c
similarity index 100%
rename from Source/Wi_stuff.c
rename to Source/wi_stuff.c
diff --git a/Source/Wi_stuff.h b/Source/wi_stuff.h
similarity index 100%
rename from Source/Wi_stuff.h
rename to Source/wi_stuff.h
diff --git a/Source/Z_zone.c b/Source/z_zone.c
similarity index 100%
rename from Source/Z_zone.c
rename to Source/z_zone.c
diff --git a/Source/Z_zone.h b/Source/z_zone.h
similarity index 100%
rename from Source/Z_zone.h
rename to Source/z_zone.h