def prn(x): print(printer.pr_str(x, True)) return
def c_str(*args): return "".join(map(lambda exp: printer.pr_str(exp, False), args))
def c_println(*args): print(" ".join(map(lambda exp: printer.pr_str(exp, False), args))) return mtypes.MslNil()
def msl_print(exp): return printer.pr_str(exp, True)