For example, in XML and HTML, documents are always in Unicode, but they may be delivered to a user agent in an encoding for another coded character set (indicated by the encoding attribute in XML, and the HTTP content-type header in HTML). The user agent then transcodes the characters of the incoming document stream into Unicode code points. For example, a document delivered with encoding iso-8859-2 may contain the string "őő" where the first character (LATIN SMALL LETTER O WITH DOUBLE ACUTE) is at code point 0xf5 in iso-8859-2. This will be transcoded so that there will be two identical characters at (Unicode) code point 0x0151 in the document as processed by the user agent.