Hi... If I'm going to write a letter(actually, an informal email, or just this kind of thread on forums) or a script for a speech, and at the beginning I want to greet my readers or audience, what's the standard of using punctuations? I heard there's difference between BrE and AmE again, as BrE prefers a colon after the person, is that so? For example... Hi (?) there (?) Hello (?) Mr. Anderson (?) Greetings (?) Americans (?) Good morning (?) ladies and gentlemen (?) Thank you!