Certainly a decree excluding Megarians from the civic agora of Athens would have been precisely enforceable, since the civic agora had precise boundaries, whereas a decree excluding them from the commercial area would suffer from inherent vagueness. But Aristophanes (Ach. 515-22) indicates that, even before the decree was passed, Megarian goods found in Attica were confiscated; one may conjecture that such confiscations did not decrease in consequence of the decree.