A feature that saves your work at intervals you specify. Backups are placed in the Attic folder.

n. A program feature that automatically saves an open file to a disk or other medium at defined intervals or after a certain number of keystrokes to ensure that changes to a document are periodically saved.

Autosave is a function in many computer applications or programs which saves an opened document automatically, helping to reduce the risk or impact of data loss in case of a crash or freeze. Autosaving is typically done either in predetermined intervals or before a complex editing task is begun. It is never an alternative to regular saving, however, and autosave backups are often purged whenever the user finishes their work.