re <i>N</i> is however many ports
   you have available on the Pico).  So we need a way to label all of the
   actual hardware outputs with those simple numbers that DOF can use.
   The logical output ports accomplish that for us.
</p>
<p>
   The outputs are defined in the JSON as an array of objects under the
   <a href="JSONConfigRef.htm#outputs"><tt>outputs</tt></a> property.
   Each array object corresponds to one DOF port, starting at DOF port #1.
</p>
<pre>
   {
      outputs: [

         // output po