used in an unusual or restricted way words used in such a way that requires users to know exactly which definition to apply
      in order to understand the content correctly Example The term "gig" means something different if it occurs in a discussion of music concerts
      than it does in article about computer hard drive space, but the appropriate definition
      can be determined from context. By contrast, the word "text" is used in a very specific
      way in WCAG 2.1, so a definition is supplied in the glossary. user agent any software that retrieves and presents Web content for users Example Web browsers, media players, plug-ins, and other programs — including assistive technologies — that help in retrieving, rendering, and interacting with Web content. user-controllable data that is intended to be accessed by users Note This does not refer to such things as Internet logs and search engine monitoring data. Example Name and address fields for a user's account.