My apologies in advance if this is off-topic; I searched to see if this question was acceptable here, but could not find a clear answer. Anyways: I posted a question on Math Stack exchange two weks ago, on some issues re Lefschetz Pencils (https://math.stackexchange.com/questions/593611/trying-to-understand-lefschetz-pencils), and no one has answered it. May I post it in here, or should I wait a bit longer? Best tag I found was "ref. request". Feel free to delete this after answering.