Web Design in a Nutshell, 3rd Edition

The unicode-bidi property is provided to take advantage of the directionality features in Unicode. Unicode and directionality are discussed in Chapter 6. Setting directionality falls outside the realm of the average web designer, but it is a useful feature for multilingual sites. For details on how these properties work, see the CSS 2.1 specification online at http://www.w3.org/TR/CSS21/. For more information on the internationalization efforts at the W3C, see http://www.w3c.org/International.