File r38/packages/assist/switchxt.red from the latest check-in
module switchxt; switch distribute; flag('(!*factor !*mcd !*div !*exp !*gcd !*rat !*rational !*rationalize !*intstr !*reduced !*ratpri !*revpri !*distribute !*ezgcd !*complex !*reduced !*lcm !*precise),'share)$ endmodule; end;