Dear sirs I would like to try luatex lunatic ( http://wiki.contextgarden.net/User:Luigi.scarso/luatex_lunatic) but i d'ont find the luatex-0.42. I'm looking in https://foundry.supelec.fr/frs/?group_id=10&release_id=406#luatex-beta-0.76.0-title-content I've been looking for a way to simulate data with different distributions (normal, poisson, exponential, etc.) in the .tex file. The use of GSL library is a good option, but it seems impossible to import in luatex. Another way is using the R-statistical through filter module***, which seems to work well in luatex. At this time I would try to import the GSL functions through python script. For that i think that i need the older luatex 0.42 but I don't find that. *** \defineexternalfilter [R] [ filtercommand={R CMD BATCH -q --save --restore \externalfilterinputfile\space \externalfilteroutputfile}, output=\externalfilterbasefile.out, directory=output, readcommand=\typefile, read=no, cache=yes, ] Jorge