Variables starting with `b' in 321/linux

• background 321/linux/readme.axp:39
• base 321/linux/qgl_linux.c:215
• bitmap 321/linux/qgl_linux.c:65
• blue 321/linux/qgl_linux.c:70
• b_mask 321/linux/rw_x11.c:98
• border 321/linux/qgl_linux.c:112
• bottom 321/linux/qgl_linux.c:155
• b_shift 321/linux/rw_x11.c:97
• buffer 321/linux/qgl_linux.c:147