sc version: 3.9dev MKtlElementCollective contains elements whose values the corresponding device sends (or receives) in grouped form: For example, an OSC device which sends all its button states in a single OSC message with a message name and n values. Very likely one never needs to make an MKtlElementCollective by hand; it is created automatically when a description file defines a group of elements as a collective. For code examples, see How_to_create_a_description_file_for_OSC esp. the sections on collective input and output.