Q. When do I use a dash in text?
A. A dash usually replaces a comma, semicolon, colon, or parentheses. When used this way, it creates an EMPHATIC separation of words. Since a dash is versatile, people tend to use it to punctuate almost any break in a sentence. Don’t. It’s best used for EFFECT. And experts say we should never type a single hyphen to represent a “double” dash (em dash).