Hello, I managed to solve the problem myself. After fooling around with the machine(s) last night I discovered that either my groff (1.09) is either 'broken' or too old. This is on a 'homemade' linux machine and the groff was from 1994. After updating to groff 1.11 the docs came out just fine!! Jonathan Yuen phone: 46 18 672369 Swedish University of Agricultural Sciences fax: 46 18 672890 Box 7044 email replies to S 750 07 Uppsala, SWEDEN Jonathan.Yuen at tvs.slu.se -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info", "help", or "[un]subscribe" (in the "body", not the subject !) To: r-help-request at stat.math.ethz.ch _._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._