| layer at (0,0) size 800x600 | |
| RenderView at (0,0) size 800x600 | |
| layer at (0,0) size 800x600 | |
| RenderBlock {HTML} at (0,0) size 800x600 | |
| RenderBody {BODY} at (8,8) size 784x584 | |
| RenderBlock {INPUT} at (4,3) size 13x13 | |
| RenderText {#text} at (20,1) size 209x19 | |
| text run at (20,1) width 209: "This checkbox should be checked." |