>I would agree if they had said that "the runtime may operate in conjunction with a Microsoft Windows platform." - but they said instead that "the runtime may ONLY operate in conjunction with a Microsoft Windows platform"

I'll assume it to mean that:

If VFP runs at all (since there are no warranties), it MAY only operate on Windows. It may ALSO operate on other platforms, but we're not venturing a guess at this point.

Sounds like your basic disclaimer.