You set the node count to 128. Let's assume you set your start channel to 1, then channels 1, 2, and 3 control the whole string. Channels 4, 5, and 6 control node 1 only. 7, 8, and 9 control node 2 and so on. But also remember any effects on channels 1, 2, or 3 will override any effects you might have on individual nodes. So you have to make sure they are off in the sections you are doing individual node effects.
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