* By default, Java’s [http://download.oracle.com/javase/6/docs/api/javax/xml/parsers/SAXParser.html SAXParser] is used to parse XML documents.
* The internal, built-in XML parser is more fault-tolerant than Java’s XML parser. It supports standard HTML entities out of the box, and it is faster than the default parser, in particular if small documents are to be parsed. In turnHowever, it the internal parser does not support the full range of DTD features, and cannot resolve [[Catalog_Resolver|catalogs]].
==GUI==