Defines starting with `b' in heretic

• BACKGROUND src/am_map.h:28
• BACKUPTICS src/doomdef.h:549
• BASEYCENTER src/r_local.h:8
• BLACK src/am_map.h:19
• BLINKTHRESHOLD src/doomdef.h:474
• BLOODRED src/am_map.h:22
• BLUEKEY src/am_map.h:23
• BLUERANGE src/am_map.h:10
• BLUES src/am_map.h:9
• BODYQUESIZE src/p_enemy.c:2589
• BONUSADD src/p_inter.c:8
• BROWNRANGE src/am_map.h:16
• BROWNS src/am_map.h:15
• BT_ATTACK src/doomdef.h:152
• BT_CHANGE src/doomdef.h:154
• BTS_PAUSE src/doomdef.h:162
• BT_SPECIAL src/doomdef.h:158
• BT_SPECIALMASK src/doomdef.h:161
• BTS_SAVEGAME src/doomdef.h:163
• BTS_SAVEMASK src/doomdef.h:159
• BTS_SAVESHIFT src/doomdef.h:160
• BT_USE src/doomdef.h:153
• BT_WEAPONMASK src/doomdef.h:155
• BT_WEAPONSHIFT src/doomdef.h:156
• __BYTEBOOL__ src/doomdata.h:10