It is very common for non-Latin text to have much taller characters than Latin text. Not only that, but these scripts often require more vertical space between lines than does Latin text. link »
www.w3.org/
www.w3.org/

19 November 2009 The Web Applications Working Group has published a Last Call Working Draft of XMLHttpRequest . The XMLHttpRequest specification defines an API that provides scripted client functionality for transferring data between a client and a server. It is the ECMAScript HTTP API. Comments are welcome through 16 December. link »
XHTML 2 Working Group Expected to Stop Work End of 2009, W3C to Increase Resources on HTML 5 link »