The Tree Map tab visually displays the current document's location within the site. The current document is highlighted in yellow. Clicking on any document name on the Tree map will bring up that document (see image). The root document appears at the far left, and each level of peers will appear vertically to the right of it. The tree map is particularly useful to see how a document relates to others in the tree, or to locate hidden documents.
The tree map tab
Please note that in sites with a large number of pages, the box representing each page may appear quite small. In case you are unable to read the name of the individual pages, mouse over individual boxes and their names will be displayed next to the cursor.