Dialog contains table with parameters of curves and \93-\94 button for removing curves.
Table columns:
\93Fig\94\96 read-only column for preview of marker. It depends on values of \93Marker\94 and \93Color\94 columns. If values of this columns are changed then preview of marker is updated accordingly.
\93Text\94\96 column for changing name of legend
\93Marker\94 - column for changing type of marker
\93Color\94\96 column for changing color of curve and curve\92s marker
\93Nb markers\94\96 column for changing number of marker\92s for steps. If number of markers is equal to 1 then markers are displayed for steps only. If number of markers is equal to 3 (for example) then markers are displayed for steps and two markers are displayed between side by side steps.
