Limit Y-value to stack segment
Every XY series has LimitYToStackSegment property. When enabled, the series will be clipped outside the segment and the Y-axis area it belongs to. In most cases the property is a boolean to control whether the data should be clipped or not. However, some newer series (SampleDataBlockSeries, LiteLineSeries and LiteFreeformLineSeries) have additional options. There LimitYToStackSegment is of enumerated type with option: None (no clipping), Clip (line will be clipped as for old series) and ClampToSegment (if line exceeds segment’s edge, it will be rendered horizontally on the edge). Note that for LiteFreeformLineSeries, a line with ClampToSegment enabled will be rendered along the edge as far as the real point X-value would be. Therefore, it may be longer than other series clamping line.

LimitYToStackSegment was set for SampleDataBlockSeries. ClampToSegment option is used for top series, while Clip for bottom.