Objects creation and modification	Modifying existing objects
Correcting mistakes
Overview     Operations     Commands

It is possible to backtrack recent actions using one of several methods here below.

Undoing a single action

The simplest method for undoing the last action is to use Undo on the Main toolbar or the U command. Many commands include their own U (undo) option so that it is possible to correct mistakes without leaving the command. When creating lines and polylines, for example, enter U to undo the last segment.

Reversing the effect of Undo

It is possible to reverse the effect of a single U command by using REDO immediately after using U . 

Erasing objects

It is possible to erase the drawn objects. If an object is erroneously canceled, use the U command to restore it.

For more information, see Erasing objects

Canceling a command

It is possible to cancel a command without completing it by pressing ESC.