Pitney Bowes MapXtreme - Manual (Page 149)

Chapter 7: Desktop Applications, Controls, Dialogs, and Tools
Editing a FeatureGeometry with the Select Tool
MapXtreme v7.1 149 Developer Guide
5. Select the root node of the map in the layer control tree view.
6. On the Editing tab, select Allow Node Editing from the Editing mode combo box.
7. Click OK to accept your changes. The map display will change and display the object's nodes.