Thank you Gerard, I already have that invaluable resource in print form! But it does not explain enough about why one dot shape is better than the other, ALTHOUGH ALL PRINT SAMPLES ARE ALL DONE WITH ELLIPTICAL DOT! Sort of a hint. > the following text probably does not answer your qeustions, but i may be > interesting though. > > http://www.us.heidelberg.com/wwwbinaries/bin/files/usa/en/products/prinect/scr > eening_technology_eng.pdf > > -Gerhard Regards, Roger Breton | Laval, Canada | graxx@xxxxxxxxxxxx http://pages.infinit.net/graxx