UNDO

• Cancels (undoes) the most recently performed command or object edit during drawing work.

1) Run the “UNDO” or “U” command, or press the CTRL+Z shortcut.
2) The last command or object edit performed is undone.
3) Running it multiple times undoes that many operations in reverse order.

• After running the UNDO command, you can select the following options

1) Control

• Controls how UNDO behaves.
• None: Disables all UNDO functionality
• All: Enables full UNDO capability
• One: Allows only the most recent command to be undone.

2) Number

• Specify the number of operations to undo, as a number.
  Example: UNDO 3 → Undoes the last 3 operations.

3) Auto

• Automatically sets the UNDO starting point after each command is run.

4) Begin / End

• BEGIN: Starts an UNDO group.
• END: Ends an UNDO group.
• Allows multiple grouped operations to be undone at once.

5) Mark / Back

• MARK: Places a marker to return to at a later point.
• BACK: Undoes back to the MARK point.