In reply to Jeff Chandler.

Yeah, but there were a lot of people including (I assume) Automatticians who were referring to the WordPress API internal calls as being copyrightable, hence could not be transferred to non-GPL projects. The whole time I've been reading about this Java debate over the past few years, I've been directly equating it to those WordPress internal API calls/function names.

Perhaps I have been confusing things in some way, but I'm not sure how.