Grammar and mechanics · hard
GRM-02
Spell out abbreviations and acronyms on first use in body copy and help content. Use the short form for subsequent mentions. Universally understood abbreviations (FAQ, URL, ZIP, LLC, IRS) and regulated accessibility terms (TTY) do not require expansion in any context. Internal or organization-specific abbreviations should always be expanded on a public-facing page. If the surrounding copy acknowledges the reader may not know a term, expand it.
Pass example
We use single sign-on (SSO) across all products. SSO keeps your account secure.
Fail example
If you don't know an HMO from an HSA, you're not alone.