Final answer:
The feature that saves copies of your files at specified intervals is AutoRecover.
Step-by-step explanation:
The name of the feature that saves copies of your files at specified intervals is AutoRecover. AutoRecover is a feature in various software programs, including Microsoft Office, that automatically saves a temporary copy of your work at regular intervals, typically every few minutes. This can be a lifesaver if your computer crashes or if you accidentally close a file without saving.