Guide to common problems/pitfalls using xsl

Hello,

I was wondering if any of you have a list of common problems that 
users of xsl run into and how these are solved? I`m explaining xsl 
in a school-related project and has to show some areas where xsl 
can be troublesome to use. 

For example :

I defined a rule which put an <BR> after an element A. Another 
element B had a <BR> in front of it. When B came after A the 
resultet of the two <BR>s where equal to <P>, and not at all what I 
intended.

Problems similar to these are of interest. Eventhough these can 
probably be solved without much work, I`m trying to locate pitfalls 
for xsl-newbies, and provide some guidelines for good and efficient 
xsl-design.

PS! Any good definition of the terms "flow-object" and "regular 
expression" would be nice to. Is there a site with definitions of 
similar terms?
 
Best regards,
Thomas Weholt,
Norway


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