Hyphens, Em Dash, or En Dash
Many people use hyphens when they should use either an em dash to an en dash. An em dahs looks like a hyphen but is wider. It is as actually as wide as the letter m. The en dash is the width of the letter n. You should use an en dash to show inclusive numbers or time periods. An en dash is a little bit longer than a hyphen. You can find en and em dashes in symbols and character menus.