if you do )lisp (trace pf2sex) you can see the input translated to s-expressions which are essentially a GREAT-like data structure. It should be possible to write USER algebra domain that captures this, parses it, and allows you to manipulate it as a tree expression.
t _______________________________________________ Axiom-developer mailing list Axiom-developer@nongnu.org http://lists.nongnu.org/mailman/listinfo/axiom-developer