doc-src/Tutorial/Misc/Defs.thy

record_simproc for sel-upd (by Sebastian Nanz);
removed record_splitter by default;

Defs = Types +
consts nand, exor :: gate
defs nand_def "nand A B == ~(A & B)"
     exor_def "exor A B == A & ~B | ~A & B"
end