Shape - defines the shape of the line segments. Possible values are: Line, Tape, Tube and Ellipsoid.
Depth Percent - controls the size of the Tape shape.
Size - controls the size of Tube and Ellipsoid shapes.
Sampling Mode - controls whether the step line uses sampling. When using sampling the step line will filter very close individual line segments and display a single line segment instead. This reduces the number of visual line segments and therefore leads to improved performance. When using sampling the step line series will not regard settings for markers and data labels, individual appearance styles and shadow. Possible value are:
Auto - The line series uses sampling only when the number of data points is large.
Enabled - The line series always uses sampling.
Disabled - The line series does not use sampling. This is the default.
Sample Distance - controls the precision of the step line series when it aggregates adjacent line segments. The precision is specified in points.