Dear Gerd Stolpmann,

Let GS = "Gerd Stolpmann" in
  written_by GS => 

 GS> See the file doc/PREPROCESSOR which is part of the distribution
 GS> tarball.

Thanks again for a reference. My next question is about :pxp_evpull
notation. Can I make such a construct:

let pile = <:pxp_evpull<
             <foo> (: some_fun () :) >>

where some_fun generates a further "subtree" using the same pxp_evpull
notation. 

My task really is to build a converter from a huge (>100M) text file (or
string Stream.t) to a huge xml file. Of course, I need to do all job with
lazy streams to avoid out-of-memory exceptions.

-- 
Yours truly, WBR, Paul Argentoff.
Jabber:	paul@jabber.rtelekom.ru
RIPE:	PA1291-RIPE