MIDI Implementation for hobbyist Control Surface Development

Hello
I was wondering if anyone could help.
I am about to start a project making one or more control surfaces for controlling
various functions in Cubase, as well as 3rd party plug ins.

I was wondering if any one could help by referring me to any documents
that list the full amount of MIDI implementation for Cubase that is.

Would be grateful for any help.
Thanks

Maybe some useful info hereā€¦

http://download.steinberg.net/downloads_software/documentation/MIDI_Devices_english.pdf

Regards. :sunglasses: