Classifier Question

I'm been struglling for hours.  I want to classify my ASPX content type.  I must use contenttype"ANY" to get the markup code.

In the GetClassificationsSpans, I seem to be only getting span's broken up in peices at a time.  I'm trying to search for the beginning of a XML section (i.e. <ASP:BUTTON), and then the end, but they are in different spans, and I'm thinking I need to keep track of the different spans assuming they are end to end, but I don't think I'm getting it.

1. What decides the span snapshot's that I'm getting to review and why does it parse the way it does.

2. Am I correct I must keep track of the different spans?

3. Is there any documentation on how this works (Iclassifier for dummies).

Thanks.

TM