Checkpointing Files

The File > Checkpoint command saves the current file to disk and erases its change history and undo history. You can think of this as a "clean" save operation. It has the same effect as saving the file, closing it, and open­ing it again.

After using Checkpoint, you will not be able to undo any prior changes. Checkpoint also re-arms the file backup feature so that when you save it again, a new backup file is made.