+Setting Info-directory-list avoids having system info pages confuse
+things. References to external manuals will be flagged as
+uncheckable. You should still check these, and also that each
+external manual has an appropriate redirect in the file manual/.htaccess
+in the web pages repository. E.g.:
+Redirect /software/emacs/manual/html_mono/automake.html /software/automake/manual/automake.html
+Redirect /software/emacs/manual/html_node/automake/ /software/automake/manual/html_node/
+
+Another tool you can use to check links is gnu.org's linc.py:
+http://www.gnu.org/server/source/
+
+You run this something like:
+
+cd /path/to/cvs/emacs-www
+linc.py -o /path/to/output-dir --url http://www.gnu.org/software/emacs/ .
+
+Be warned that it is really, really slow (as in, can take ~ a full day
+to check the manual/ directory). It is probably best to run it on a
+single directory at a time from eg manual/html_node. It is very
+inefficient, but may reveal a few things that info-xref does not.
+
+