Visual Navigation of DOM Tree
| row 1, col 1 | row 1, col 2 | row 1, col 3 |
| row 2, col 1 | row 2, col 2 | row 2, col 3 |
| row 3, col 1 | row 3, col 2 | row 3, col 3 |
tag name
| row 1, col 1 | row 1, col 2 | row 1, col 3 |
| row 2, col 1 | row 2, col 2 | row 2, col 3 |
| row 3, col 1 | row 3, col 2 | row 3, col 3 |
tag name