Suppose that you're writing on genkoyoshi (原稿用紙), and you are writing a quotation, e.g.
「これはペンです。」
And let's say that each line of the genkoyoshi has 8 blocks. The first block would, I presume, be occupied by 「, followed by one block for each of the kana こ・れ・は・ペ・ン・で.
What do you do with the rest of the quotation? My understanding is that you're not supposed to put punctuation at the beginning of a new line, so you can't split it す and 。」, nor す。 and 」. Do you just glom all of す。」 into a single block?
(Or do you just never include a 。 immediately prior to a closing 」?)