+ Strict I/O enforces a simple rule: Plugins have the same number of inputs as
+ they have outputs. By induction the track will have as many output ports as
+ there are input ports.
+</p>
+
+<p>
+ Adding a Plugin will not modify the signal flow. The number of plugin outputs
+ is forced to the number of inputs present at the point of insertion. If a
+ plugin pin is missing, it is ignored. If a plugin pin is not connected, it is
+ fed with silence. Non-connected plugin outputs are ignored.
+</p>
+
+<p>
+ Strict I/O enforces the number of output ports. The number of inputs to the
+ panner (outputs of last plugin) defines the number of track outputs (after
+ panner). Required ports are automatically added, excess ports are removed.
+ The user cannot manually add or remove output ports.