Undo a mistake

Undo the last thing you did with Ctrl+Z or Undo, and do it again with Redo if you undid too much.

Once you are done, the drawing is as it was before you made the mistake. You can undo many steps, one at a time. One change is one step, even when it touches many objects, for example a delete or an import.

Every session has its own history, and it is saved in the browser. So you can still undo after you have been in another session, or when you open VCAD again in the same browser.

Undo the last thing

Click Undo on the toolbar, the left of the two arrows just right of Snap, or press Ctrl+Z.
Tip: If the cursor is in a field, for example in the Properties panel, Ctrl+Z only undoes what you typed in that field. Click Undo on the toolbar instead.
Click Undo again to undo the step before. Keep going until the drawing is the way you want it.

Redo what you undid

If you undid too much, click Redo, the right of the two arrows, or press Ctrl+Y.
Tip: If you make a new change after undoing, you can no longer redo what you undid.

If something doesn't work

What you see	What to do
Ctrl+Z does nothing while you draw a line	You have only placed the first point. Press Esc to remove it.
A deleted session does not come back	A session you deleted with the cross on its tab cannot be undone.
The undo history was cleared because a step in it could not be read. The drawing is unchanged.	The earlier steps cannot be undone. Carry on working as normal.

Stuck? Write to us at info@vcad.dk

Updated 11 November 2026