[xml] To build structures or not to build structures

[Mike Key <mikekey frii com>]

I am a fairly new to C and very new to libXML.  I have a simple 
question regarding how to use the DOM interface.

In the tutorial on xmlsoft.org when using DOM, the example shows how to 
create your own structure to store data.  Later it seems to reference 
that it is easier to allow the DOM structures to hold the data and you 
simply read/update/delete what you need.

Are there benefits/drawbacks to either approach?  I'm likely missing 
something but can't seem to figure out why I would create my own 
structures as the examples do.

Thanks in advance to anyone willing to answer.

mk