1. I read somewhere that a mechitzah is technically something required only in a shul. Is there a halachic source for this?

  2. I read somewhere that the concept of mechitzah has been extended to include weddings etc. to prevent kalus rosh. Where is the halachic source for this?

marked as duplicate by Shmuel Brin, Double AA Jul 24 '14 at 2:58

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