Defines starting with `n' in src

• NA src/s_sound.c:79
• NF_SUBSECTOR src/doomdata.h:178
• NORM_PITCH src/s_sound.c:69
• NORM_PRIORITY src/s_sound.c:70
• NORM_SEP src/s_sound.c:71
• NORM_VOLUME src/s_sound.c:67
• NUMCHEATPLYRLINES src/am_map.c:193
• NUMKEYS src/g_game.c:181
• NUMPLYRLINES src/am_map.c:171
• NUMTHINTRIANGLEGUYLINES src/am_map.c:211
• NUMTRIANGLEGUYLINES src/am_map.c:202