# Welcome to the Highcharts Gantt JS (gantt) Options Reference

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

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# legend.symbolHeight

The pixel height of the symbol for series types that use a rectangle in the legend. Defaults to the font size of legend items.

Note: This option is a default source of color axis height, if the colorAxis.height option is not set.