Pro Tools on Mac OS X supports XML for storing and importing patch names for external MIDI devices.
Usually, several MIDI patch name files (.midnam) are installed for the factory default patch names of many common MIDI devices.
refer to http://archive.digidesign.com/support/tips/xnames.html for more information
Why midnams are useful?
With use of midnams in ProTools you can access your FX via midi.
So, you can save presets information of external FX within your ProTools session and it will automatically recalled on session start, you can switch them, even automation can be done (depends on fx) etc,…
here is a list of midnams created and proofed by me:
Some midi patch name files developed by me can be found at http://digicake.com/midnams/ (digicake studio/auckland ) which is the best source of midnams anyway.
If you need midnams which can't be found on the net drop a line to email@example.com , I can help you to reverse engineer and develop such a midnam for you,…