Z

ZIP codes

All capitals. When requesting ZIP codes in forms, remember that some of your readers may not have ZIP in the countries they live in. Either do not make the ZIP compulsory, or else inform the reader that they should write “None” in the ZIP field if they don’t have such a code.

Get The Web Content Style Guide: An Essential Reference for Online Writers, Editors, and Managers now with O’Reilly online learning.

O’Reilly members experience live online training, plus books, videos, and digital content from 200+ publishers.