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| RenderView at (0,0) size 800x600 |
| layer at (0,0) size 800x600 |
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| RenderBody {BODY} at (0,0) size 800x600 |
| RenderBlock {DIV} at (0,0) size 800x20 |
| RenderText {#text} at (0,0) size 456x19 |
| text run at (0,0) width 456: "Two green 16x16 pixel squares should appear below stacked vertically." |
| RenderBlock {DIV} at (0,20) size 16x16 [bgcolor=#FF0000] |
| RenderImage {IMG} at (0,0) size 16x16 |
| RenderText {#text} at (0,0) size 0x0 |
| RenderBlock (anonymous) at (0,36) size 800x16 |
| RenderPartObject {IFRAME} at (0,0) size 16x16 [bgcolor=#FF0000] |
| layer at (0,0) size 16x16 |
| RenderView at (0,0) size 16x16 |
| layer at (0,0) size 16x16 |
| RenderBlock {HTML} at (0,0) size 16x16 |
| RenderBody {BODY} at (0,0) size 16x16 |
| RenderImage {IMG} at (0,0) size 16x16 |
| RenderText {#text} at (0,0) size 0x0 |
