Is 'everything' a refrence or isn't it?

[Paul Rubin]

Donn Cave <donn at u.washington.edu> writes:
> But you're asking for more than that.  We're not just talking
> about how people think about value, you want a definition that's
> suitable for a language reference.  Whereupon you would indeed
> run into the kinds of questions you pose above, and more.

I know the Scheme standard includes a formal mathematical description
of the language semantics, maybe because the felt the usual verbiage
couldn't be precise enough.