EDIT allows you to change or revise a part.

Using the options listed under EDIT, you can:

* trim or extend various entities 
* break, section, or segment entities 
* recall entities previously deleted from the screen 
* move or manipulate an entity using the BX MOVE 
  (box move) option 
* group entities so that they can be selected individually
  or as a complete unit 
* alter the shape of an existing spline
