Acronyms and abbreviations should be spelled out the first time it is used on a page with the abbreviation in parentheses.
A mechanism for identifying the expanded form or meaning of abbreviations is available. (WCAG Level AAA)
Do not use symbols and abbreviations (including symbols like ‘ for “foot” or x for “by” or a dash for “through”) as that will not translate. Exceptions include using the percent symbol instead of writing our “percent” within content and fractions may use the slash symbol (1/3).
- Example: The World Health Organization (WHO) has indoor air quality guidelines.