Window structure, 219, 235, 273
  1.3 compatible usage, 19
  BorderBottom, 88, 89, 105
  BorderLeft, 88, 89, 105
  BorderRight, 88, 89, 105
  BorderRPort, 105
  BorderTop, 88, 89, 105
  definition, 104
  FirstRequest, 214
  Flags, 110, 186
  GZZHeight, 93
  GZZMouseX, 93, 105, 273
  GZZMouseY, 93, 105, 273
  GZZWidth, 93
  Height, 89, 105
  IDCMPFlags, 249-250
  LeftEdge, 105
  MessageKey, 249
  MouseX, 105, 269
  MouseY, 105, 269
  ReqCount, 105
  RPort, 105
  TopEdge, 105
  UserData, 105
  UserPort (IDCMP), 31, 249, 253-254, 257
  Width, 89, 105
  WindowPort, 249, 253-254
  WScreen, 105