annexes.html

<emu-annex id="annex-implementation-dependent-behaviour">
  <h1>Implementation Dependent Behaviour</h1>

  <p>
    The following aspects of the ECMAScript 2022 Internationalization API Specification are implementation dependent:
  </p>

  <ul>
    <li>
      In Locale:
      <ul>
        <li>
          Support for the Unicode extensions keys *"kf"*, *"kn"* and the parallel options properties *"caseFirst"*, *"numeric"* (<emu-xref href="#sec-Intl.Locale"></emu-xref>)
        </li>
        <ins class="block">
        <li>
          The set of preferred calendars (<emu-xref href="#sec-calendars-of-locale"></emu-xref>), collations (<emu-xref href="#sec-collations-of-locale"></emu-xref>), hour cycles (<emu-xref href="#sec-hour-cycles-of-locale"></emu-xref>), numbering systems (<emu-xref href="#sec-numbering-systems-of-locale"></emu-xref>), and time zones (<emu-xref href="#sec-time-zones-of-locale"></emu-xref>) per locale
        </li>
        <li>
          The default general ordering of characters (characterOrder) within a line per locale (<emu-xref href="#sec-character-direction-of-locale"></emu-xref>)
        </li>
        <li>
          The 'first' day of a week, the minimal days required in the first week of a month or year, and which days of the week are considered as part of the 'weekend', for calendar purposes, per locale (<emu-xref href="#sec-week-info-of-locale"></emu-xref>)
        </li>
        </ins>
      </ul>
    </li>
  </ul>
</emu-annex>