+<p>
+ <dfn>Auxilliary sends</dfn> are <a
+ href="/working-with-plugins/processor-box/">processors</a> in a bus or
+ track channel strip. They tap the signal at a specific point in the signal
+ flow (pre-fader, post-fader, before or after EQs and other plugins, etc.)
+ and send a copy of that signal somewhere else, without affecting the
+ normal signal flow downwards to the channel fader.
+</p>
+<p>
+ Usually, aux sends from several tracks are collectively sent to a
+ dedicated <dfn>Aux bus</dfn> in Ardour, to create a monitor mix for a
+ musician, or to feed an effect unit. The output of such a bus might
+ be routed to separate hardware outputs (in the case of headphone or monitor
+ wedge mixes), or returned to the main mix (in the case of an effect).<br
+ />
+ Since sends are JACK ports, it is also possible to send the tapped signal
+ somewhere else directly, which is not usually possible on hardware mixers
+ (see <a href="external-sends/">External Sends</a>).
+</p>