More Accuracy with Keys
Using Undo And Redo
The Undo button on the left erases the last element drawn.
If the vanity above was the last element drawn, then it is erased when Undo is clicked.
Click Redo, the button to the right, to restore the last element erased by Undo.
Undo can be used repeatedly to erase all elements in the plan.
Redo can be used repeatedly to restore elements erased with Undo.