| 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 {P} at (0,0) size 784x18 |
| RenderText {#text} at (0,0) size 159x18 |
| text run at (0,0) width 159: "Test x-height caluclation." |
| RenderBlock {P} at (0,34) size 784x18 |
| RenderText {#text} at (0,0) size 243x18 |
| text run at (0,0) width 243: "This box is 5ex by 5ex at 100px Arial." |
| RenderBlock {DIV} at (0,68) size 259x259 [bgcolor=#0000FF] |