One of the great consciousness-altering moments of the twentieth century was the introduction of the Undo command. After a long day in front of the computer, the ability to undo any action seems quite natural. (Unfortunately, reaching for the Ctrl+Z keys after spilling grape juice on Grandma’s antique tablecloth still doesn’t work in the real world.)
Fortunately, most steps you take in Dreamweaver can be reversed with either the Undo command or the History panel.
Like most computer programs these days, Dreamweaver lets you undo the last step you took by pressing Ctrl+Z (-Z), or by choosing Edit→Undo. (This command changes to reflect your most recent action. If you just deleted some text, for example, it says Edit→Undo Delete.) When you’re feeling indecisive, you can redo the action you just undid by choosing Edit→Redo or by pressing Ctrl+Y (-Y).