ARMS Institute:Manual of Style for Articles

Formal Tone

 * Avoid slang and contractions.
 * Avoid the first-person and second-person points of view.
 * Avoid situations where genderless singular pronouns are required. (Use they/them/their as a last resort, but try to avoid this because it breaks subject/verb agreement.)

Localization

 * For consistency, use American-style English, e.g. "localization" instead of "localisation" and "color" instead of "colour". Redirects from UK spellings to US spellings are okay.
 * Use the #dateformat magic word when inputting dates. This will allow users to see the dates in the format they've chosen in their Preferences. See News for examples.
 * When expressing lengths/heights or weights, use Template:Height and Template:Weight. These templates automatically convert metric units to imperial, displaying both. For example, &#123;&#123;Weight|kg=76&#125;&#125; displays as "".