Dear ConTeXt folks, I am sorry to bother you with these kind of messages. On page 382 of the Metafun manual [1] (Fr 08 Okt 2010 13:44:26 CEST) it should be In this case the pairs (log(x), x) and … so (log(x), x) instead of (x, x). Thanks, Paul [1] http://www.pragma-ade.com/general/manuals/metafun-s.pdf