Buttons:
QUIT — disconnect Display and destroy viewer.
24 BPP — run display in 24 bits per pixel if possible.
8 BPP — run display in 8 bits per pixel if possible.
4 BPP — run display in 4 bits per pixel if possible.
2 BPP — run display in 2 bits per pixel if possible.
1 BPP — run display in 1 bits per pixel if possible.
A ON/OFF — Toggle controller channel A, on or off.
B ON/OFF — Toggle controller channel B, on or off.
SLOW — Toggle display update rate, fast or slow.
FREEZE — Toggle display update, TRUE or FALSE.
SCRAMBLE — While FREEZE, scramble the color map with static display.
ROLL — While FREEZE, roll the color map with static display.
RANDOM — Update entire screeen with Random colored and sized rectangles.
SYMMETRIC — Make a four quadrant symmetric display.
TEST PAT — 8 color test pattern, static display.
COLORBARS — Show colorbars and grey wedge.
CONVERGE — Show convergence test pattern.
BIG RED — Show RED bars from intensity 0 to intensity 255 in steps of 16.
BIG GREEN — Show GREEN bars from intensity 0 to intensity 255 in steps of 16.
BIG BLUE — Show BLUE bars from intensity 0 to intensity 255 in steps of 16..
SMALL RED — Show RED bars from intensity 0 to intensity 15 in steps of 1.
SMALL GREEN — Show GREEN bars from intensity 0 to intensity 15 in steps of 1.
SMALL BLUE — Show BLUE bars from intensity 0 to intensity 15 in steps of 1.