Added new argument to use_dir for derivation kind.

Removed tag_assumption.

Tuned naming of theorems.

Added functions for printing primitive proof terms.

Tuned function extend_lexicon.

Initial revision of tools for proof terms.

Now obsolete; replaced by LF style proof terms.

Initial version of generic code generator.

New implementation of LF style proof terms.

Replaced old derivations by proof terms.

Tidied function SELECT_GOAL.

Added equality axioms and initialization of proof term package.

Added setup for code generator.

Added function unique_strings.

- exported SAME exception - exported functions for normalizing types

Some basic rules are now stored with "open" derivations, to facilitate simplification of proof terms.

Added new files for proof terms.

generated by Session.name;

export name;

cosmetics

removed imname, uncurried Meth

avoid ML bindings;

Implemented indentation schema for conditional rewrite trace.

Traced depth of conditional rewriting

tuned error message;

prefer immediate monos; tuned;

support for absolute namespace entry paths;

Updated proofs to take advantage of additional theorems proved by "typedef"

removed obsolete "arities";

tuned;