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I often use Indesign's optical margin alignment feature in book settings. I like the way the right-hand margin looks with punctuation hanging out a little. But I also sometimes get en dashes (with a space on either side marking parentheses) that jut out into the left-hand margin. I'm not sure how I feel about this. Is there historical - pre-digital - precedence for it? Could you/ would you do it with a letter press for example? Interested to hear what people think.