USECODE_INTRINSIC(set_timer)
USECODE_INTRINSIC(set_npc_flag)
USECODE_INTRINSIC(set_timer){	int tnum = parms[0].get_int_value();	if (tnum >= 0 && tnum < (int)(sizeof(timers)/sizeof(timers[0])))		timers[tnum] = gwin->get_total_hours();	else		cerr << "Attempt to use invalid timer " << tnum << endl;	return(no_ret);}