I would like to make a tree pane that shows the items as checkboxes.
For example the following markup
8 Total PS [-][x] 5 RF Network PS .[-][x] 3 Mission PS (In Display) ..[x] PSID 400 ..[x] PSID 401 ..[x] PSID 402 .[+] [x] 2 Other PS [-] [x] 3 External PS .[-] [x] 1 Gulf Port CR ..[x] PSID 2100 .[+] [ ] 2 Shaw CR
Notice how the items in the tree have check boxes that precede the item