Caveats
  Boopsi - message, 293, struct GadgetInfo, 316
  Gadgets
    do not share knob imagery, 143
    do not use image lists for knobs, 143
    GimmeZeroZero window border, 136
    imagery and the selection box, 124
    mouse tracking with boolean gadgets, 136
  GadTools
    GadTools enforces Intuition limits, 375
    GADTOOL_TYPE bit, 401
    GT_SetGadgetAttrs() and GT_BeginRefresh(), 386
    PLACETEXT with GENERIC_KIND gadgets, 398
    post-processing, 368
    preserve bits set by CreatsGadget(), 398
    refreshing the display, 382
    restrictions on gadgets, 411
    side effects, 412
  keymap - key numbers over hex 67, 818
  preferences - printer device, 334
  Text - don't assume Topaz-8, 672