rew, or Urdu). Some are also written in a mixture, for
example Arabic is mostly written right-to-left, with numerals written
left-to-right.</p>
<p>The text direction must be provided to APIs that render text or lay out
boxes horizontally, so that they can determine which direction to start in:
either right-to-left, <a href="../dart-ui/TextDirection-class.html">TextDirection.rtl</a>; or left-to-right,
<a href="../dart-ui/TextDirection-class.html">TextDirection.ltr</a>.</p>
<h2 id="design-discussion">Design d