-* For breaks in thought — such as this splendid example — use
- the long em-dash.
-* For ranges of values, use the en-dash: Monday – Friday, 0 –
- 11.
+* For breaks in thought—such as this splendid example—use
+ the long em-dash. Note that the em-dash is snugged up against the text on both
+ sides--this is the proper way to use them.
+* For ranges of values, use the en-dash: Monday–Friday, 0–11. Note
+ again, the en-dash is snugged up to its surrounding elements.