Rules Language

With some trepidation, I offer

http://www.purplestreak.com/ietf-opes/draft-ietf-opes-rules-language-hopalong-00.txt

It is incomplete in several aspects, particularly the detailed grammar,
but I think that it gets at the heart of defining a stream processing
language for OPES.  I had intended to use the Sieve grammar, but
in the time I had for this, I couldn't decide if it is worth the
trouble of using the funky notation.

Comments are, of course, welcome, even more so than no comments.

Hilarie