3 0 * * * ~/bin/mail-calendar -l de_DE
</pre></p>
+<p><b>Important note</b>: this program requires the FreeBSD version of
+calendar. The OpenBSD version uses incompatible commandline options
+and doesn't provide features used by this program. An older version
+of the <a href="http://packages.debian.org/bsdmainutils">\
+bsdmainutils</a> package which provides the calendar program is
+secured <a href="http://people.debian.org/~joey/stuff/calendar/">\
+here</a>.</p>
+
</page>
# Local variables: