HTML 4.01 and XHTML 1.0 Reference: <bdo> Tag

HTML <bdo> Tag - Bidirectional Override of Text Direction
Syntax	This element uses separate opening and closing tags. <bdo>...</bdo>
Usage	The <bdo> tag is used set the text direction of the enclosed text. The text is placed between the opening and closing tags. HTML & XHTML <bdo> example. <p> <bdo dir="rtl">Text written right to left.</bdo> </p>
Content Model	The <bdo> element can contain the following tags, and Text, between its opening and closing tags. <a> <abbr> <acronym> <applet> <b> <basefont> <bdo> <big> <br> <button> <cite> <code> <del> <dfn> <em> <font> <i> <iframe>¹ <img> <input> <ins> <kbd> <label> <map> <object> <q> <s> <samp> <script> <select> <small> <span> <strike> <strong> <sub> <sup> <textarea> <tt> <u> <var> Notes: 1. The <bdo> element can contain the <iframe> tag when using DTD Transitional and Frameset documents but not Strict documents. 2. Red tags have been deprecated and are allowed in DTD Transitional and Frameset documents but not Strict documents.

<bdo> Tag Attribute Summary
Required	Tag Specific	Core	Focus	Events	Language
dir		id class style title		onclick¹ ondblclick¹ onkeydown¹ onkeypress¹ onkeyup¹ onmousedown¹ onmousemove¹ onmouseout¹ onmouseover¹ onmouseup¹	lang xml:lang¹
Notes: 1. XHTML only.

<bdo> Tag Attributes
Attribute	Description
dir	The dir attribute specifies the direction of the text. For left-to-right use the value "ltr". For right-to-left use the value "rtl". HTML & XHTML <dir> example. <p> <bdo dir="rtl">Text written right to left.</bdo> </p> Note: This is a required attribute.
id	The id attribute assigns a unique name to a tag. This allows style sheets or scripts to reference the tag. See id Example
class	The class attribute assigns a class name to a tag. The class name does not need to be unique. More than one tag can have the same class name. This allows style sheets or scripts to reference multiple tags with a single class name. See class Example
style	The style attribute specifies styles for the tag. For Cascading Style Sheets (CSS), the syntax is name:value. Each name:value pair is separated by semicolons. See style Example
title	The title attribute specifies additional information about the tag. It is common for browsers to display the title when the pointing device stops over the object. See title Example
onclick	The onclick attribute specifies a script to be run when the object is clicked with a mouse or other pointing device. See onclick Example Note: XHTML only.
ondblclick	The ondblclick attribute specifies a script to be run when the object is double clicked with a mouse or other pointing device. See ondblclick Example Note: XHTML only.
onkeydown	The onkeydown attribute specifies a script to be run when a key is pressed down. See onkeydown Example Note: XHTML only.
onkeypress	The onkeypress attribute specifies a script to be run when a key is pressed and released. See onkeypress Example Note: XHTML only.
onkeyup	The onkeyup attribute specifies a script to be run when a key is released. See onkeyup Example Note: XHTML only.
onmousedown	The onmousedown attribute specifies a script to be run when the mouse button, or other pointing device button, is pressed while over the object. See onmousedown Example Note: XHTML only.
onmousemove	The onmousemove attribute specifies a script to be run when the mouse, or other pointing device, is moved while it is over the object. See onmousemove Example Note: XHTML only.
onmouseout	The onmouseout attribute specifies a script to be run when the mouse, or other pointing device, is moved away from an object after being over it. See onmouseout Example Note: XHTML only.
onmouseover	The onmouseover attribute specifies a script to be run when the mouse, or other pointing device, is moved onto the object. See onmouseover Example Note: XHTML only.
onmouseup	The onmouseup attribute specifies a script to be run when the mouse button, or other pointing device button, is released while over the object. See onmouseup Example Note: XHTML only.
lang	The lang attribute specifies a language. This attribute can help the browser to correctly display text. This attribute can also be useful for braille translation software, speech synthesizers, dictionary definitions, etc. See lang Example
xml:lang	The xml:lang attribute specifies a language for XHTML documents. This attribute can help the browser to correctly display text. This attribute can also be useful for braille translation software, speech synthesizers, dictionary definitions, etc. See xml:lang Example Note: XHTML only.

HTML <bdo> Tag Examples
<bdo> example.