Thanks for the info. I am suggesting, for gradual improvement, different line styles can be put as the top priority. It would be useful as it can be seen the different between curves. Colourful lines cannot be seen in black and white printing. I have difficulties to use SMath in academic writings (blank and white printing) because of that.
I agree with you that 2D plots functionality is one of the top priority, and I am convinced that Andrey will do his best to improve this as soon as he can.
Regards, Radovan
When Sisyphus climbed to the top of a hill, they said: "Wrong boulder!"