The Undo command reverses the previous sequence-editing operation. Undoing a command not only restores the sequence to its previous state, but also restores the corresponding features table. In addition to undoing typed characters, MacVector currently enables you to undo the following editing operations: Cut, Copy, Paste, Clear, Reverse, Complement, Reverse & Complement, and Replace. You can also use the Undo command to nullify a repositioning of the sequence origin(s). The wording of the Undo command always reflects the action that will be undone.
After undoing a command, you can redo it by selecting the Undo command again. If an editing operation cannot be undone, the Undo command is disabled. You cannot undo a Replace All operation.