that *all* the necessary documentation updates have been made, mark
the entry with "+++". Otherwise do not mark it.
+If your change requires updating the manuals to document new
+functions/commands/variables/faces, then use the proper Texinfo
+command to index them; for instance, use @vindex for variables and
+@findex for functions/commands. For the full list of predefine indices, see
+http://www.gnu.org/software/texinfo/manual/texinfo/html_node/Predefined-Indices.html
+or run the shell command 'info "(texinfo)Predefined Indices"'.
+
For more specific tips on Emacs's doc style, see
http://www.gnu.org/software/emacs/manual/html_node/elisp/Documentation-Tips.html
Use 'checkdoc' to check for documentation errors before submitting a patch.