 Deleting elements from the model diagram
 Deleting elements from the model diagramTo delete elements from the model diagram, follow these basic steps:
 pointer tool of not already using it.
 pointer tool of not already using it.You can also delete the selection by hitting the "delete" key.
If you should accidentally delete something, then the  Undo tool will bring it back again.
Undo tool will bring it back again.