Border structure, 123, 212, 223, 224, 224, 234-235, 235, 238
  BackPen, 234
  Count, 234
  data organization, 237
  definition, 234
  DrawMode, 234
  FrontPen, 234, 237
  LeftEdge, 234, 235, 238, 238
  NextBorder, 235, 238
  TopEdge, 234, 235, 238, 238
  XY 234, 235, 237-238