Near as I can tell ... it appears to be written in a very obscure language (delphi maybe) and it only supports a small subset of the functions. I've been fooling around trying to get the keys to do more complicated things but with very limited success. For instance, the only programs i can get to open are the ones found in the windows folder ... notepad ... calculator... write pad etc. I can not get it to open Word, Excel, etc.
Anyway .... like I posted earlier, any 2 key commands, or 1 key commands (they can be consecutive ... as shown by selecting the whole document and changing it to upper or lower case) or strings of text can be assigned to a key. So, for instance, I have the 'e' key on the usb board set to insert my email address whereever the cursor is of whatever program I'm using. That's kinda handy cause i hate typing it out all the time.
The only useful examples I've seen are - to open programs (but again ... only ones in the 'window' folder ... and to assign a key a string of text. but like I mentioned those multi-key commands are quite easy to map to a single key.
so ... what is you want to do with the 2nd keyboard? ... multikey commands mapped to one key? ... maybe you could provide me of an example of what you are hoping to get one key on the 2nd keyboard to do?