Hi Robert,
>So, for ex. you use whatever number of keys to the
>visual "octave" (or non octave) of the keyboard one
>needs, and with accidentals wherever they need to go.
>even up to a 217-et keyboard!
Yes, beyond that, there's hardly any room to put a
name inside.
>Is this the first ever 217-et keyboard?
On a computer screen, I think so.
Manuel