Jerry Stuckle wrote in news:m3nrfk$dii$1@dont-
email.me:

In general, you can *refer* to another company's trademark, but you
can't *use* their trademark in a competing way (see below).


That's how I understand it, but Yamaha are very particular about syntax.
That's why I'm asking them directly, because that way I might get two things:
better clarification (because their web page details use of 'YAMAHA', but not
of 'DX7'), and perhaps even some slack (as written permission) regarding
their usual rules, if they decide my use is not in conflict, but co-
operation, which it is, being essentially a matter of interoperability. When
I make my own synthesiser ideas public, beyond emulation of theirs, it will
have its own name, which is already chosen, unless I think of a better one.