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4.1. Approach One: using a tool to process XML

We could write a program to process an XML document. The program could be used to produce HTML which we could then make available on the WWW. More details about this are given in Section 5.

The problem with using a tool is that we have to remember to run it everytime the XML document is updated. The remaining two approaches enable the user of a browser to work directly on an XML document.