This is unofficial documentation for the Comfort Keyboard Systems Comfort Keyboard.
Official (and far far worse) documentation can be obtained from the Comfort Keyboard driver download page at http://comfortkeyboard.com/drivers_downloads.html. Unsurprisingly, there are no drivers on the driver download page. Additionally, the links to download documentation for all of their keyboards just point to the same files...
If this actually winds up helping anyone, I'll be very surprised, but you're welcome if that's the case.
Also, yes, Comfort Keyboard is still (at the time of writing) apparently in business. The site could've fooled me too, but I've spoken with their tech support on a couple occasions.