# 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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# series.xrange.dataLabels.className

A class name for the data label. Particularly in styled mode, this can be used to give each series' or point's data label unique styling. In addition to this option, a default color class name is added so that we can give the labels a contrast text shadow.