Re: xsl:for-each-group using multiple threads?

Thanks, Michael and David for the quick replies! I already had the 
suspicion that if it was be so easily transferrable from xsl:for-each, 
in a proper way it would probably be done, already.

David's map+stream approach brought be to an even easier solution for 
my problem: As it mainly concerns the 2nd stage of a 2-stage 
conversion I can easily produce several "grouped" result-documents 
(maybe named pipes) in the first stage and process them in parallel 
and using streaming in the second stage. This way I can use adjustable 
package sizes and all cores without running out of memory and 
hopefully end-up with i/o as bottleneck :)

Marc