From http://www.w3schools.com (Copyright Refsnes Data)

HTML <bdo> tag

Example

Specify the text direction:

<bdo dir="rtl">Here is some Hebrew text!</bdo>

Try it yourself!

Definition and Usage

bdo stand for bidirectional override.

The <bdo> tag allows you to specify the text direction and override the bidirectional algorithm.

Browser Support

Internet Explorer Firefox Opera Google Chrome Safari

The <bdo> tag is supported in all major browsers.

Note: This tag is not supported in Safari version 2 and earlier.

Differences Between HTML and XHTML

NONE

Required Attributes

DTD indicates in which DTD the attribute is allowed. S=Strict, T=Transitional, and F=Frameset.

Attribute Value Description DTD
dir ltr
rtl		 Defines the text direction STF

Standard Attributes

id, class, title, style, dir, lang, xml:lang

For a full description, go to Standard Attributes.

From http://www.w3schools.com (Copyright Refsnes Data)