| 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 (3,4) size 12x12 | |
| RenderText {#text} at (18,0) size 218x18 | |
| text run at (18,0) width 218: "This checkbox should be checked." |