Some popup menus are very limited, for example, in a text field, right-clicking it will offer Cut, Copy, Paste, Select All and Undo.

The My Place Tree has a popup menu where some commands can only be accessed here.

Help

Propagate Shared Style:  Available when the selected feature is a container (document or folder).  Opens a dialog where you can decide how to apply styles to descendant features. If the style to propagate is blank, all descendant shared styles will be removed. Add:  Add a Feature. Depending on the selected feature when you add a new feature, the newly added feature may be inserted after the selected feature or appended to the list of child features if the selected feature is a container (document or folder). Clone:  Clone the selected feature including its descendants if any. Delete:  Delete the selected feature and its descendant if it is a container. Xml Editor:  Edit the selected feature in an XML editor. Preview KML:  Preview the kml file in Notepad as read-only. Save Selection As:  Save the selected feature as another name either as a kml or as a kmz file type. The newly created file is not opened. Save As:  Save a copy of the opened kml file as another name but does not open it. Share/Post:  Choose between the entire kml file of the selected feature. Creates a temporary kmz file and opens the Upload to the Internet/Intranet dialog box. Email:  Choose between the entire kml file of the selected feature. Creates a temporary kmz file and opens the Email Your Place dialog box.