The dash (—) is a mark of punctuation used to set off a word or phrase after an independent clause or a parenthetical remark (words, phrases, or clauses that interrupt a sentence). ... "A dash is a mark of separation stronger than a comma, less formal than a colon, and more relaxed than parentheses."
thats the way you use it i use it when i'm uncertain about something like: "okay-" or "alright-"
