Want to save trips to the Toolbox when using the Pen tool (P)? You’re in luck. Better yet, you don’t even have to hold down any modifier keys (such as Option/Alt, etc.), because Photoshop will do the work for you. Here’s why: When you draw a path, move your cursor over a line segment and your Pen cursor automatically changes to the Add Anchor Point tool, so you can click anywhere along that path to add a point. Move your cursor over an existing point, and it changes into the Delete Anchor Point tool (click on the point, and it’s deleted). This is called Auto Add/Delete, and it’s on by default (you can turn it off, should you want to, using the checkbox in the Options Bar).