Thanks Wolfgang,

http://wiki.contextgarden.net/Including_pages_from_PDF_document
http://www.pragma-ade.com/general/magazines/mag-0004.pdf
http://source.contextgarden.net/tex/context/base/page-imp.tex?search=page-imp

This means that first I have to create the pdf, and then to process via another context  file
\starttext
\copypages
\stoptext

Can't I simply use a command inside the original code?

Thanks

-a-

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Andrea Valle
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CIRMA - DAMS
Universitą degli Studi di Torino
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"
Think of it as seasoning
. noise [salt] is boring
. F(blah) [food without salt] can be boring
. F(noise, blah) can be really tasty
"
(Ken Perlin on noise)