IntuiMessage structure, 119, 247, 250, 256
  Class, 256-257, 257, 268
  Code, 186, 256, 258, 259-260, 261, 268
  ExecMessage, 256
  IAddress, 257, 259, 262, 263
  IDCMPWindow, 257
  Micros, 257
  MouseX, 256, 268, 273
  MouseY, 256, 268, 273
  Qualifier, 256, 261, 282
  Seconds, 257
  SpecialLink, 257