user interface component a part of the content that is perceived by users as a single control for a distinct
      function Note 1 Multiple user interface components may be implemented as a single programmatic element.
      "Components" here is not tied to programming techniques, but rather to what the user
      perceives as separate controls. Note 2 User interface components include form elements and links as well as components generated
      by scripts. Note 3 What is meant by "component" or "user interface component" here is also sometimes
      called "user interface element". Example An applet has a "control" that can be used to move through content by line or page
      or random access. Since each of these would need to have a name and be settable independently,
      they would each be a "user interface component." user inactivity any continuous period of time where no user actions occur The method of tracking will be determined by the web site or application.