-the edited version will replace the version in the Tar buffer. @var{v}
-extracts a file into a buffer in View mode. @kbd{d} marks a file for
-deletion when you later use @kbd{x}, as in Dired. @kbd{C} copies a file
-from the archive to disk and @kbd{R} renames a file.
-
-Saving the Tar buffer writes a new version of the archive to disk with
+the edited version will replace the version in the Tar buffer. @kbd{v}
+extracts a file into a buffer in View mode. @kbd{o} extracts the file
+and displays it in another window, so you could edit the file and
+operate on the archive simultaneously. @kbd{d} marks a file for
+deletion when you later use @kbd{x}, and @kbd{u} unmarks a file, as in
+Dired. @kbd{C} copies a file from the archive to disk and @kbd{R}
+renames a file. @kbd{g} reverts the buffer from the archive on disk.
+
+ The keys @kbd{M}, @kbd{G}, and @kbd{O} change the file's permission
+bits, group, and owner, respectively.
+
+ If your display supports colors and the mouse, moving the mouse
+pointer across a file name highlights that file name, indicating that
+you can click on it. Clicking @kbd{Mouse-2} on the highlighted file
+name extracts the file into a buffer and displays that buffer.
+
+ Saving the Tar buffer writes a new version of the archive to disk with