pi = FindItemBySerial(serial); if (pi != NULL) ItemSpecific();
if(isItemSerial(serial)) { pi = FindItemBySerial(serial); if (pi != NULL) ItemSpecific(); else sysmessage(s,"That is not a valid item."); }
	virtual void process()	{		makeSerial();		pi = FindItemBySerial(serial);		if (pi != NULL)			ItemSpecific();		else			sysmessage(s, "That is not an item.");	}