UFT Pro (LeanFT) .NET SDK Reference, Version 14.03
EnableLabelEditing Method (ITreeViewNode)
Activates the edit mode for the node in the tree-view control to enable renaming.

IMPORTANT: This method only enables the node for renaming. To actually rename the node, you must set its value using the IEditor or IEditField test object, together with an applicable method.
void EnableLabelEditing()