AccumulatedVisualContext Tree:
  [0] transform=[1,0,0,1,0,0] origin=(0,0) (ViewportPaintable(Viewport<#document>))
    [1] scroll (PaintableWithLines(BlockContainer<PRE>#out))

DisplayList:
SaveLayer@0
  CompositorWheelHitTestTarget@0 target_scroll_node_index=0 rect=[0,0 800x600]
  CompositorWheelHitTestTarget@1 target_scroll_node_index=0 rect=[0,0 800x41]
  CompositorWheelHitTestTarget@1 target_scroll_node_index=0 rect=[8,8 784x20]
  CompositorWheelHitTestTarget@1 target_scroll_node_index=0 rect=[8,8 784x20]
  CompositorWheelHitTestTarget@1 target_scroll_node_index=0 rect=[8,8 105.671875x20]
  FillRect@1 rect=[8,8 106x20] color=rgb(212, 208, 200)
  FillPath@1 path_bounding_rect=[8,8 106x20]
  CompositorWheelHitTestTarget@1 target_scroll_node_index=0 rect=[13,10 95.671875x16]
  CompositorWheelHitTestTarget@1 target_scroll_node_index=0 rect=[13,10 95.671875x16]
  DrawGlyphRun@1 rect=[13,10 96x16] translation=[13,22.796875] color=rgb(0, 0, 0)
  DrawLine@1 from=[13,26] to=[109,26] color=rgb(0, 0, 0) thickness=2 style=Solid
Restore@0

