Hi Graeme, I've tried -N option in conjunction with -w but I can't see any concentration of patches around gray axis. I'm using 1.3.3 on OSX Snow Leopard. Andrea Il giorno 17/mag/2011, alle ore 01.56, Graeme Gill ha scritto: > yan@xxxxxxxxxxxxxxxxx wrote: >> help me, where it is? > > <http://www.argyllcms.com/doc/targen.html#N> > > Graeme Gill. >