Publishers of technology books, eBooks, and videos for creative people

Home > Articles > Web Design & Development

  • Print
  • + Share This

Well-Formed XML Documents

What does it mean for an XML document to be well formed? To be well formed, an XML document must follow the syntax rules set up for XML by the World Wide Web Consortium in the XML 1.0 specification (which you can find at, and which we'll discuss in more detail in the next chapter). Informally, well-formedness often means that the document must contain one or more elements, and one element, the root element, must contain all the other elements. Also, each element must nest inside any enclosing elements properly. For example, this document is not well formed because the </GREETING> closing tag comes after the opening <MESSAGE> tag for the next element:

<?xml version="1.0" encoding="UTF-8"?> 
    Hello From XML
    Welcome to the wild and woolly world of XML.
  • + Share This
  • 🔖 Save To Your Account

Related Resources

There are currently no related titles. Please check back later.