If you have made extensive changes to a file and then change your mind
about them, you can get rid of them by reading in the previous version
of the file with the @code{revert-buffer} command. @xref{Reverting, ,
If you have made extensive changes to a file and then change your mind
about them, you can get rid of them by reading in the previous version
of the file with the @code{revert-buffer} command. @xref{Reverting, ,