For assigning instruments and note number interpreters (e.g. mtof) to blocks of notes, and moving such a block of notes around.
If you want eight sequential notes playable, but split up across different parts of the keyboard, you can assign a control block to their intended locations on the keyboard, and set the output blocks so the higher control block picks up where the lower one leaves off.
In-between those two blocks the keyboard may switch to a different tuning, or give abstract key controls, by setting a third control block to start after the fourth note.
First version, so bound to have bugs.