NEW MIDI PROTOCOL and NRPN

The original Midi protocol is already some 40 years old and of course extensions of the Midi protocol were developed through the years. Here are a few:

New-MIDI-protocol

Details-about-MIDI-2.0™-MIDI-CI-Profiles-and-Property-Exchange-

NRPN gives higher resolution in Control Change parameters:

Music-How-to-Use-NRPN

NRPN-tutorial