1 layer at (0,0) size 800x600
2 LayoutView at (0,0) size 800x600
3 layer at (0,0) size 800x600
4 LayoutBlockFlow {HTML} at (0,0) size 800x600
5 LayoutBlockFlow {BODY} at (8,8) size 784x584
6 LayoutBlockFlow {INPUT} at (2.88,4) size 12x12
7 LayoutText {#text} at (17,0) size 221x18
8 text run at (17,0) width 221: "This checkbox should be checked."