iCalendar
=========
-Exporting birthday events into an ics file is easy::
+Exporting birthday events into an ``.ics`` file is easy::
$ bdrem --renderer=ical > birthdays.ics
http://example.org/bdrem/?renderer=ical
+You can subscribe to it in your calendar or email application.
+Integration has been tested with Thunderbird's Lightning__ and Claws Mail's
+vCalendar__ plugin.
+
+__ https://addons.mozilla.org/en-US/thunderbird/addon/lightning/
+__ http://www.claws-mail.org/plugin.php?plugin=vcalendar
+
HTML page
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