<?xml version="1.0" ?>
The final requirement of a well-formed XML document is that there be
only one element at the top level of the file. For example, this is
well formed:
<?xml version="1.0" ?>
<library>
<title>Programming PHP</title>
<title>Programming Perl</title>
<title>Programming C#</title>
</library>
but this is not well formed, as there are three elements at the top
level of the file:
<?xml version="1.0" ?>
<title>Programming PHP</title>
<title>Programming Perl</title>
<title>Programming C#</title>