XML Summary

AN XML file consists of

A prolog that is optional but can include the xml declaration and version:
<?xml version="1.0">
The DOCTYPE that names the root element of the _ML and points to the DTD, either as a standalone
<! DOCTYPE [calendar
<!ELEMENT event ...> etc.
]>
Or as a file on the server:
<! DOCTYPE calendar system "http://www.someplace.com/xml/calendar.dtd">

The body which contains the elements that you create e.g.
<calendar>
<event>
...
</event>
</calendar>

An epilog for further programming instructions if they are needed (not generally used).