I've watched the tutorial several times and am starting to wrap my head around this stuff. So a Port on the sending end connects to a receiving port on the other end, sort of a tunnel allowing transmission of midi messages. I was able to successfully implement a play command using code in the Playback-Send Midi- Play section. On the receiving end (Camelot Pro), I made sure that ST3 was active as a midi in source. I then went to the Remote Control section of CP, found Play/Pause and entered the same code (CC3, channel 1, value 127). So now when I trigger Play in ST3, it starts playback in both apps.
Question- How do I implement the Play/Pause command? Do I need to add more code on to what I already have to get the playheads to pause when I press the remote button a second time?