(lispref.info)Backups and Auto-Saving


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Backups and Auto-Saving
***********************

   Backup files and auto-save files are two methods by which Emacs tries
to protect the user from the consequences of crashes or of the user's
own errors.  Auto-saving preserves the text from earlier in the current
editing session; backup files preserve file contents prior to the
current session.

* Backup Files
How backup files are made; how their names are chosen.
* Auto-Saving
How auto-save files are made; how their names are chosen.
* Reverting
`revert-buffer', and how to customize what it does.

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