Defines starting with `n' in src

• NA src/s_sound.c:80
• NF_SUBSECTOR src/doomdata.h:179
• NORM_PITCH src/s_sound.c:70
• NORM_PRIORITY src/s_sound.c:71
• NORM_SEP src/s_sound.c:72
• NORM_VOLUME src/s_sound.c:68
• NUMCHEATPLYRLINES src/am_map.c:195
• NUMKEYS src/g_game.c:182
• NUMPLYRLINES src/am_map.c:173
• NUMTHINTRIANGLEGUYLINES src/am_map.c:213
• NUMTRIANGLEGUYLINES src/am_map.c:204