Hello,

I'm writing to this list for the first time because after using
XSL for some years I've come across a data pattern that I think
defies use by XSL. It is the kind of thing that a language that
allows you to alter/update variables and iterate through lists
can do with relative ease, but I don't find it possible with
XSL. It is an example of hierarchical meaning within flat
data, that is, there are groups of rows of data, but some
groups represent updates to information in prior groups.