Editor's note: The Freelance Writers Den only opens for enrollment a few times each year. If you want to be notified when it opens, your best bet is to join the waiting list. Enjoy this Freelance Writ
Ah, the em dash — that multifaceted, all-purpose punctuation mark that can act as a parenthesis, comma, colon, semicolon or even quotation mark. It’s used in so many manners: to separate clauses t