rt #1
         { ... },

         // output port #2
         { ... },

         // output port #3
         { ... },
      ],
   }
</pre>
<p>
   That's all there is to the DOF numbering - DOF sees the ports as this
   simple array of ports, starting at port #1 and arranged in the order you list
   them <tt>outputs</tt> elements.
</p>
<p>
   The main thing you're required to define for every port is the physical
   device that the port controls, which you do via the
   <a href="JSONConfigRef.htm#outputs.devic