a href="https://www.iana.org/assignments/language-subtag-registry/language-subtag-registry">IANA Language Subtag
Registry</a>.
For example, <code>const Locale('he')</code> and <code>const Locale('iw')</code> are equal and
both have the <a href="dart-ui/Locale/languageCode.html">languageCode</a> <code>he</code>, because <code>iw</code> is a deprecated language
subtag that was replaced by the subtag <code>he</code>.</p>
<p>See also:</p><ul><li><a href="dart-ui/Window/locale.html">Window.locale</a>, which spec