XML最大的优点是你既可以在这个文本文件中存储结构化数据，也可以在其中存储非结构化数据——也就是说，它能包含和描述“粗糙的”文档数据，就象它描述“规则的”表格数据一样。



XHTML是目前编写HTML的首选方法；因为XHTML本身就是格式良好的XML，与通常畸形的HTML文档相比， XHTML格式文档更容易处理。



XSLT和XSL是对XML文档进行转换的语言。它们可以将XML文档转换成各种格式，比如另一个文本文件、PDF文件、HTML文件、逗号分割的文件，或者转换成其它的XML文档。 -XML biggest advantages is that you can in this text file to store structured data can also be stored in unstructured data- that is, it contains and describes the　rough　the document data, as it describes　 rules　as form data. XHTML is the preferred method of preparation of HTML　as XHTML itself is well-formed XML, and HTML documents are usually deformed in comparison, XHTML format documents more easily dealt with. XSLT and XSL is an XML document conversion language. They can be converted into XML documents in various formats, such as a text file, PDF file, HTML file, a comma separated file, or converted into other XML documents.