Element: treenode.checked
Element: treenode.checkednumeric
The current state of the check box associated with treenode. This has a value 0 or 1. Although the value may be applied to treenodes in all windows, check boxes are only visible when enabled by the wtree -ch switch.
Changing the value will effect a visual change to the treenode's check box, but will not invoke the treenode.check callback.