Drag and Drop support
To move content: Select the desired elements and drag them to the desired location. Note that all child elements and attributes of the element also move with it.
To copy content with drag and drop: Select the desired elements, then press the
Ctrl key on your keyboard while dragging them to the desired location . The
cursor appears as follows when copying during drag and drop: 

When dragging one or more elements within the Outline Editor, a valid insertion location
is indicated with the following cursor: An invalid location is indicated by the cursor
appearing as follows: 
You can cancel the drag and drop operation without moving any elements by pressing the ESC key during the drag.
Note:
- Before releasing the mouse button, watch closely for the dotted lines which indicate the level where your content will be placed. Be careful not to move your content underneath the wrong element.
- Note that you cannot drop on/from a read-only node.
- Multiple nodes can be dragged simultaneously after selecting them using Ctrl+Click or Shift+Click.