\label{Authoring_XML_Intro}

It is assumed that the reader is already familiar with the basic terminology
of XML. If not, it is recommended that you read http://www.w3schools.com/xml/xml\_syntax.asp
to acquire a basic understanding of how to read and write XML. 

LON-CAPA uses a very simple subset of XML and there is a lot you do
\emph{not} need to know, including but not limited to: CDATA, DTDs,
namespaces, and stylesheets. If you search for XML resources on the
Internet yourself, you do not need to read about those things to learn
how LON-CAPA uses XML for problems.