I worked a little bit with markers and now have two thing about the
"Stroke style" Dialog.
The first thing is, is it possible to define my own Pattern?
And the second, the list of makers is quite long and I think that it
will grow in the future. So, I think we need a new widget, something
like the widget gimp uses for the fonts, for the markers.
P.S. Why have you removed the "Zoom when window is resized" button?