If you’re like most people, you probably use outlines to help organize your illustrations. But if you’re like me, sometimes you end up with outlines that are hard to edit or remove. In this article, I’ll show you how to undo outline in Illustrator. To undo an outline in Illustrator, first select the outline that you want to edit. Then click the “Undo” button (the three lines in the bottom left corner of the Illustrator window). ..