You can type an underscore easily on both Mac and Windows computers. The underscore looks like a dash below the letters ( _ ).
The underscore sign is mainly used to show a space where a space is not allowed, such as in internet usernames, email addresses and some computer programs. Which dash is about half the length of an em dash?.Why am I receiving someone else’s email?.Are underscores in emails unprofessional?.What is the difference between dash and underscore?.What does an underscore look like in an email address?.
