Item-To-Add
When a value is assigned to this property, a new item is added to the Tree-View control.
Multiple values can be added at the same time, enclosed between parentheses.
Each new item will be added according to the values set to the Parent and Placement properties.
If Data-Columns is set, the value of this property is distributed on the different columns defined by Display-Columns.
 
Example - Add a new item to the tree-view
...
working-storage section.
77 tv-item-hdl1 handle.
...
procedure division.
...
  modify screen-1-tv-1
         parent = null
         item-to-add "Option 1"
         giving tv-item-hdl
...