By default, the AllowMoveDescendents property is True. Use the AllowMoveDescendents property to prevent moving all descendents ( children and outgoing elements ) when focused element is moved. The OutgoingLinks property returns a safe array of outgoing links ( links that starts from the element ). Use the AllowResizeSelection property to prevent resizing the entire selection when focused element is resized. Use the AllowMoveSelection property to prevent moving the entire selection when focused element is moved. Use the ExpandLinkedElements property to add expand/collapse glyphs next to elements that has outgoing links.