Firstly, Syphon is an amazing piece of tech. Thanks Vade!
Secondly, I’m trying to modify the Ms Pinky patch so that it can send out Open GL video (which plays much better in the Maxi Patch) to a Syphon Server. I’m guessing, from my very basic knowledge of Max/Msp that I’d need to edit a patch called: MultiModeMixer_Pinky.
And guessing that I insert a “jit.gl.syphonserver” somewhere in the red area of attached image?
Your assumption looks correct. Make a [jit.gl.syphonserver maxi-path @servername Maxi] and connect the output of the [jit.gl.slab maxi-patch] to the new jit.gl.syphonserver, and you should, when running the patch, see a Syphon Server listed in any Syphon Client called “Maxi”