# 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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# accessibility.series.descriptionFormat

Format to use for describing the data series group to assistive technology - including screen readers.

The series context and its subproperties are available under the variable `{series}`, for example `{series.name}` for the series name, and `{series.points.length}` for the number of data points.

The chart context and its subproperties are available under the variable `{chart}`, for example `{chart.series.length}` for the number of series in the chart.

`{seriesDescription}` refers to the automatic description of the series type and number of points added by Highcharts by default. `{authorDescription}` refers to the description added in series.description if one is present. `{axisDescription}` refers to the description added if the chart has multiple X or Y axes.

Note that if series.descriptionFormatter is declared it will take precedence, and this option will be overridden.