A Conversation for Punctuation - a Quick Guide
humble hyphen - confusion
Martin Harper Started conversation Sep 24, 2001
seems to me that the someone has cunningly used en-dashes for em-dashes in this entry, thus confusing the issue.
'-' is an en-dash
The character you get from writing &8211; in a GuideML page is an em-dash. It's longer than an en-dash. About the same width as the letter 'm', in fact. 
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humble hyphen - confusion
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