Bi-Directional Override. Bi-directional text - defines an element that has different directional content. This is usually used with languages that are read in a different direction to the default language. For example, if Hebrew were used in an English document, it would need to be defined as being read from right-to-left. The <bdo> tag is used to override the current text direction.
<p>The output of this <bdo dir="rtl">word</bdo> will actually be "drow".</p>