Documentation for this section has not yet been entered.
Instructs the reader to check characters and throw an exception if any characters are outside the range of legal XML characters. Character checking includes checking for illegal characters in the document, as well as checking the validity of XML names (for example, an XML name may not start with a numeral).
For more information, see sections 2.2 (http://www.w3.org/TR/REC-xml#charsets) and 2.3 (http://www.w3.org/TR/REC-xml#NT-Name) of the W3C XML 1.0 recommendation.