!7

p {
  final RGBImage img = shootScreen();
  final L<Rect> rects = autoSegment(img);
  final ImageSurface is = showImageWithSelections(img, rects);
  final Var<Rect> highlighted = showImageWithSelections_highlighted;
  is.specialPurposed = true;
  
  ImageSurface isH = null;
  Rect last = null;
  repeat with sleep 1 {
    Rect r = highlighted!;
    if (neq(last, r)) {
      last = r;
      isH = show332Histogram(img.clip(r), isH);
    }
  }
}