Light correction: hexl-mode is the hex editor proper. hexlify-buffer called by itself just does a transformation to a side-by-side hex/chars view; it doesn't se

Light correction: hexl-mode is the hex editor proper. hexlify-buffer called by itself just does a transformation to a side-by-side hex/chars view; it doesn't set up for hex-editor navigation or transforming back to binary on save or anything like that.