* \isabellestyle{it} produces near math mode output;
* settings: smart setup of canonical ML_HOME, ISABELLE_INTERFACE, XSYMBOL_HOME;
Defs = Types +
consts nand, exor :: gate
defs nand_def "nand A B == ~(A & B)"
exor_def "exor A B == A & ~B | ~A & B"
end