How to use a full stop in English. It's called full stop in British English and period in American English. 1. We use a full stop at the end of a sentence that isn't a question or an exclamation. E.g. (a). I knocked at the door. There was no reply. (b). She stood up and went away. 2. We sometimes use the full stop in abbreviation. E.g. Jan.(January) e.g.(for example), a.m.(anti meridiem). 3. We use a full stop in internet and email addresses. It's called DOT in this situation. E.g. https://www.a