 by the Unicode consortium which is written like this: <strong>U+0639</strong>.&nbsp; This magic number is called a <em>code point</em>. The U+ means "Unicode" and the numbers are hexadecimal. <strong>U+0639</strong> is the Arabic letter Ain. The English letter A would be <strong>U+0041</strong>. You can find them all using the <strong>charmap</strong> utility on Windows 2000/XP or visiting <a href="http://www.unicode.org/">the Unicode web site</a>.</p>

<p>There is no real limit on the number of letters 