Items
The items that are contained in the tree. Click the edit button to open the Tree Items dialog where you can create or modify your list.
A tree consists of a number of items, each one with two parts: item text, which is the visible part that will appear in the tree, and item data, which is an invisible part that is associated with that item. You can use the item data to store any information that you want to associate with the item text, such as a file path or page name.
Items can be added to the tree by clicking add button and entering the desired text. You can manipulate structure of the tree using the buttons at the bottom of the dialog.
Op t ion s
Checkboxes
Show checkboxes next to each item in the tree.