Line color (any CSS color string).
Stable identifier (used to build the primitive id and for remove/list).
OptionallabelOptional human label (e.g. the symbol name). Not drawn by the primitive.
OptionalnormalizationNormalization mode. Defaults to 'percentage'.
Close-price points, ascending by time.
One symbol overlaid on the chart in compare mode.
pointsmust be sorted ascending by time (t, Unix seconds, matching the main series).valueis the symbol's close price at that time. The series' timestamps need NOT line up with the main chart's bars — they are aligned to the X axis by time (viewport.timeToX), interpolating between main-series bars as needed.