web.xml parsing

[John de la Garza]

I am a bit new to XML tools.  Can someone tell me what I should be doing to
be able to add and delete security constraint info in the web.xml file?

I have tried reading some docs on XML as a whole, but I need to get going
quickly and don't have time to read everything about XML as a whole...I just
need to know what to focus on to be able to parse a data file and add in
stuff and delete stuff...for a config file