- - simplify metagrammar => go to top-down rewriting => finalize metagrammar and rdp-op's
-
- - What is our use model?
- - Parse, attribute, unify (ag)
- - Parse, transform tree, walk (rdp)
- - Parse, walk
- - cascading tree rewrites
-
- ==> use the middle formalism "for now" and in meta.g; layer others
- on top of it