All symbols starting with `o' in windoom

• O_BINARY src/m_misc.c:110
• occasionally src/readme.txt:64
• Okay src/readme.txt:238
• oldest src/i_sound.c:164
• once src/p_spec.h:243
• one src/r_segs.c:198
• OOP src/doomdef.h:110
• openbottom src/p_local.h:169
• openrange src/p_local.h:170
• opentop src/p_local.h:168
• optimized src/dconsole.c:71
• optional src/w_wad.c:137
• or src/p_maputl.c:107
• orientation src/r_draw.c:497
• Otherwise src/s_sound.c:767
• overflowsprite src/r_things.c:334