messages. While viewing such a message in Rmail or Gnus, do @kbd{M-x
diary-from-outlook} to import the entry. You can make this command
recognize additional appointment message formats by customizing the
-variable @code{diary-outlook-formats}.
+variable @code{diary-outlook-formats}. Other mail clients can set
+@code{diary-from-outlook-function} to an appropriate value.
@c FIXME the name of the RFC is hardly very relevant.
@cindex iCalendar support