6. XML
XML (the eXtensible Markup Language) 
is a data description language that can be used for storing data.
It is particularly useful as a format for sharing information 
between different software systems.
The information in this
 chapter describes XML 1.0, which is a W3C Recommendation.
Within this chapter, any code written in a sans-serif oblique font
represents a general template;  that part of the code
will vary depending on the names of the elements and 
the names of the attributes that are used to
store a particular data set.
Subsections
Paul Murrell

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