The name of the Webroutine that will be invoked when an item in the tree is selected. Individual items in an unlevelled list can override this using the list_onselect_wrname_field property.
The current Webroutine.
The name of a valid Webroutine, in single quotes. A selection can be made from a list of valid Webroutines by clicking on the corresponding dropdown button in the property sheet.