on Just Publishing Advice:
The most flexible punctuation mark—the Em Dash
There are many ways to use dashes in writing.
But it is necessary first to make the difference between a dash and a hyphen.
En and em dashes are longer than the hyphen and are used to indicate a break in a sentence. The hyphen is used to join words together to show that they are combined.
Chris The Story Reading Ape's Blog 
This is a very good article if you are using US English. However if you are in a country that follows UK English the rules are different and this article should have stated that 🙂
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I think Derek is USA based, Lindsey, but you’re correct 🤗
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Sound advice, indeed.
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