Welcome to the Highcharts Stock JS (highstock) Options Reference

These pages outline the chart configuration options, and the methods and properties of Highcharts objects.

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series.column.borderWidth

The width of the border surrounding each column or bar. Defaults to 1 when there is room for a border, but to 0 when the columns are so dense that a border would cover the next column.

In styled mode, the stroke width can be set with the .highcharts-point rule.