Add a link from bus section docs to the task docs. Add a paragraph to task docs
to tell about messages and the bus.
* @see_also: #GstMessage, #GstElement
*
* The #GstBus is an object responsible for delivering #GstMessage packets in
- * a first-in first-out way from the streaming threads to the application.
+ * a first-in first-out way from the streaming threads (see #GstTask) to the
+ * application.
*
* Since the application typically only wants to deal with delivery of these
* messages from one thread, the GstBus will marshall the messages between
* After creating a #GstTask, use gst_object_unref() to free its resources. This can
* only be done it the task is not running anymore.
*
+ * Task functions can send a #GstMessage to send out-of-band data to the
+ * application. The application can receive messages from the #GstBus in its
+ * mainloop.
+ *
* Last reviewed on 2006-02-13 (0.10.4)
*/