Example 1     <<      >>       intro       contents     

XML document must contain one or more elements.

  Well-formed documents   HOME     

A well formed document with one element:

               <text>This is an XML document</text>
               
            

A well formed document with several elements:

               <text>This is an 
               <doctype>XML document</doctype>
               </text>
               
            

  Documents with errors   HOME     

An XML document must contain at least one element:

               ??? This is an XML document ???