Hello,
Maybe somebody will find the attached (simple) abstraction useful. I often have to trigger a single gemhead on, and everything else off. This is the best way that I have found to do it is far... If somebody thinks there is a better way, I'd be curious to hear of it.
I have begun to find that abstractions like this save a lot of time in the long run. The main thing a VJ interface has to do, after all, is let me turn various GEMHEADS on/off on the fly, so as simple as it is, it's the basis of doing live visuals for me (combined with key messages, and midictl messages).
The test patch demonstrates the abstraction.
~David