AutoCAD REDO Command

REDO Command Access

How the REDO Command Works

AutoCAD keeps a command history stack — a list of all recent actions.

• UNDO walks backward through that stack, reversing actions one by one.
• REDO walks forward again, restoring those undone steps.

However, REDO only works immediately after using UNDO. Once you perform any new command — such as drawing a line or saving — the REDO chain is cleared.

Undo moves backward through previous actions, while Redo moves forward again through the command history.

Example:

1. Draw three lines (L1, L2, L3).
2. Type UNDO twice → L3 and L2 are removed.
3. Type REDO once → L2 reappears.
4. Draw a circle → REDO history is now lost.

The command line feedback will confirm the number of actions restored:

Command: REDO
1 operation performed

Understanding this sequence is critical when reviewing multiple design revisions or adjusting geometry step by step.

Practical Examples

After undoing two lines, Redo restores the second one.

Example 1 – Undoing Too Far

You used UNDO repeatedly and erased both the last line and the one before it.
→ Use REDO once to restore the second line instantly.

Example 2 – Comparing Versions

Toggle between UNDO and REDO to view how your drawing looked before and after a change. This is a simple visual check method without using the Drawing Compare feature.

Example 3 – Testing Workflows

When experimenting with new tools, combine UNDO and REDO to evaluate how edits affect geometry, then choose which version to keep.

These habits build confidence and speed, allowing you to edit freely without fear of losing work.

Common Mistakes and Troubleshooting

“REDO not available”

You’ll see this message if you haven’t used UNDO yet, or if a new command was executed after UNDO.

Fix: Press Ctrl + Y immediately after your UNDO, before performing any other action.

REDO stack cleared

Starting a new command resets AutoCAD’s internal command history, removing your ability to redo previous undos.

Confusion between REDO and OOPS

• REDO: Restores undone operations.
• OOPS: Recovers the last erased objects — even after other commands.

If you erased something and can’t REDO it because you drew something new, try OOPS.

Related Commands and Workflows

Related Commands and Workflows

Command	Purpose
UNDO	Reverses previous actions
OOPS	Restores erased objects
ERASE	Deletes selected objects
STRETCH	Modifies geometry that can be reversed with UNDO/REDO
MOVE	Shifts objects; can be undone/redone for quick comparison

Mastering these reversible commands makes it easy to test, correct, and refine your work with precision.

Keep Undo and Redo visible side by side for efficient editing.

MREDO Options

Alternately, MREDO allows for multiple REDO commands at once. Three options are available when MREDO is initiated:

1. Enter Number of Actions

Entering an integer will redo the number of actions entered.

2. All

Entering an integer will redo the number of actions entered.

3. Last

Only the last command will be redone.

Frequently Asked Questions (FAQ)