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18.3 Saving Files

Saving a buffer in Emacs means writing its contents back into the file that was visited in the buffer.

Save Commands:    Commands for saving files.
Backup:    How Emacs saves the old version of your file.
Customize Save:    Customizing the saving of files.
Interlocking:    How Emacs protects against simultaneous editing

of one file by two users.

Shadowing:    Copying files to “shadows” automatically.
Time Stamps:    Emacs can update time stamps on saved files.