a,b,c,d are arbitrary.@Default values are a=3,@b=7,@c=3Ad=6 . a:Half width of drawing domain. c:Half height of drawing domain. b and d:Density of lines. Different integers are better.

[D./L.]0:Drawn by dots. 1:Drawn by continuous line, default 1.

[Rap.]Rapidity index of drawing. 10 is fastest and default. 1 is slowest. Slow drawing will be useful to understand the equations.

[Def.]Varying interval of parameter. Default 0-6.283(2ƒÎ).

[Prec.]Varying step of parameter. Default 0.005. Too large or too small value is not good. If the graph is not satisfactory, input 0 in [D./L.], click [Draw] and correct arrangement of dots to form rough line by [Prec.]. After that, input 1 in [D./L.] and the graph will be beter.

[y-axis]Distance of y-axis from left. Pixels. Left 0, Right 640. Default 310.

[x-axis]Distance of x-axis from top. Pixels. Top 0, Bottom 500. Default 260.

[Size]Width of gray grid lines. Pixels. Default 50.

[Coor.]Presentation index of coordinate system. 3:Full presentation, 2:Coordinate axes and major grid lines, 1:Coordinate axes only, 0:Nothing.

Red marks on the axes: Origin and unit.

Names of abscissa x and ordinate y are erased when the origin moved.