On Mon, 15 Sep 2008, t.artur(a)freenet.de wrote: Thanks for the detailed report. I'll investigate. In the meantime, I should say that the use of "dumbplot.gp" is a work-around for features missing in gnuplot versions lower than 4.3. As you may know, gnuplot has a rather conservative release schedule. Version 4.3 has been in progress for a long time, but is still in CVS. Gretl ships a gnuplot 4.3 CVS build in both the MS Windows and OS X packages, and I'm pretty sure that if you download and install the current gnuplot 4.3 from CVS the problem you mention will go away. Nonetheless, the problem ought not to arise with earlier gnuplot versions, so I'll do some experimentation. Allin Cottrell