| layer at (0,0) size 800x600 | |
| RenderView {#document} at (0,0) size 800x600 | |
| layer at (0,0) size 800x19 | |
| RenderBlock {foo} at (0,0) size 800x19 | |
| RenderBlock (anonymous) at (0,0) size 800x19 | |
| RenderText {#text} at (0,0) size 99x19 | |
| text run at (0,0) width 99: "Hello World!" | |