This window lets you set the color, style, and thickness of lines for each plot
Plots are numbered in the order you specify them, starting at 1. The box on the left lets you select a plot number whose style you wish to set.
Select a color for the selected plot from the top two rows on the right.
Select a line style for the selected plot from the next four rows on the right
Select a line thickness for the selected plot from the bottom row on the right
Check this box if you want to supply your own title for the plot. The default title is "History Plot".