OpenSoundControl

OpenSoundControl input as a modulation source: any incoming message, read by its address (for example /1/fader1) rather than by a fixed slot number the way MIDI CC is.

The listen port is set in Settings > OpenSoundControl’s UDP Port field.

OpenSoundControl Learn arms a parameter and completes the assignment from the next incoming message at whatever address sent it, instead of typing an address by hand; see MIDI and OpenSoundControl Learn.