points & lines with plot2d



Hi

I am still struggling with plot2d and I haven't been
able to find a way to draw isolated points and segments of 
lines in the same window.

I have read the documentation available in Maxima
but it did not show any way to do this.

Is there a way to do it?

For example if I use
plot2d([[discrete,[[0,0],[1,1]]],[discrete,[[1,0],[0,1]]]],[gnuplot_curve_styles,["with 
lines 2"],["with points 3"]]);

gnuplot only prints lines and no isolated points.


   Thanks in advance

   Fabrizio