In TV_Text_Demo it is relatively easy to see that the output pin group is selected by passing the value 12 to TV_Text at start up. I've made use of that code for many years to drive composite monitors of various sorts. Now I need composite video graphics.
In the Graphics_Demo -> Graphics -> TV combo, the specification of the output pin group seems to be somewhat obfuscated, especially for a Demo program. Is there something obvious I'm overlooking?