+<p>
+ Like a normal aux send, an <dfn>external send</dfn> taps the signal at a
+ specific within a channel strip, but delivers it to an external application
+ or piece of hardware rather than an Ardour bus. By itself, an external
+ send has no effect whatsoever on the audio signals within Ardour —
+ it is a one-way signal routing that leaves all existing signal processing
+ just as it was.
+</p>
+<p>
+ Most people will not have much use for this, but it can be useful if you
+ want to experiment with external applications or hardware signal processing
+ applications.
+</p>