Removes objects from a drawing

Customizes the program settings

Restores erased objects

Reverses the effects of previous UNDO or U command

Reverses the effects of several previous UNDO or U commands

Reverses the most recent operation

Reverses the effect of commands

Indicates the state of the Auto, Control, and Group options of the UNDO command

Stores the number of marks placed in the UNDO control stream by the Mark option