(* The existing ILU language mappings
have an unfortunate "lowest common
denominator" effect: sequences
(C arrays, python tuples/lists,
perl lists, ...) marhsall naturally,
but richer data structures such as
dictionaries, s-expressions, and
structures with sharing do not.

These interfaces codify these idioms in
an attempt to standardize marshalling
optimizations. ILU emoploys structural
equivalence, but names of record and
union members affect the types, so
we must standardize them.

(Essentially, standard
smalltalk/lisp data structures)

*)

interface Object;

interface Symbol;
interface SExpr
INTERFACE Literal;
interface RefAny
INTERFACE Pickle