console window limited text-lines in wgnuplot

Hi,

when I start wgnuplot I get a limited line history in the console-window.
For Example, when I type:

> show palette colornames

I can't see all names. Scrolling up doesn't help, since the number of
text-lines ist limited to ca 170 lines. How can I increase this, e.g. in
wgnuplot.ini?

Many thanks,
Martin Erren