*A festive meal (סעודה) must be eaten on the day of Purim.
*A festive meal (סעודה) must be eaten on the day of Purim.
*It is a custom to drink until "one does not know the difference between [[Haman]] and [[Mordecai]] (עד דלא ידע).
*It is a custom to drink until "one does not know the difference between [[Haman]] and [[Mordecai]] (עד דלא ידע).
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*It is a custom among many to dress up in a costume, to celebrate the happiness of the day.<ref>Laws of Purim[http://ohr.edu/yhiy/article.php/1508]</ref>
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*It is a custom among many to dress up in a costume, to celebrate the happiness of the day.
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*It is customary to make noise when the name of Haman is mentioned.
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<ref>Laws of Purim[http://ohr.edu/yhiy/article.php/1508]</ref>