I am not sure! I have read so many pages of XML documentation, module documentation, Perlmonks posts and article on the Web that I am beginning to be unsure about life itself!
Fortunately I don't actually need to READ any XML. What I really need is to GENERATE XML in the very form that the sample documents came to me. My brain is exploding right now and I have found a devastatingly simple solution - trusty old HTML::Template!
But I have no doubt that XML is going to become an all too regular part of my life, so I am going to need to do some learning. I have installed XML::Twig and read your tutorials online and I am impressed. When I have a little time I will work through some of the examples and no dount have more questions. THis is one of those days when I wish I could find someone who wanted me to design some hardware rather than write code!