The Document Tree shows all the elements (problems, parts, directions, etc.) in an Acces Document.
The Document Tree provides shortcut menus for the different elements in your Document. Right-click a node to bring up a list of operations you can perform on each element.
You can also use the Document Tree to reorder the Parts and Problems in your document. Click on the Part or Problem you want to move, then drag it above/below an existing Part or Problem to change where it appears in your Document.