Subject is explanatory. I think the Csound software commands can by itself, but I can’t make sense of the few samples I’ve found.
How can you control a VST's parameter range value without a widget?
Can you give a little more detail? In Cabbage, each widget represents a VST parameter. Csound has no concept of VST parameters but you can always control a VST using MIDI. If you need a VST automatable parameter, but don’t actually want a slider, can you not just make it invisible?