# Welcome to the Highcharts Maps JS (highmaps) Options Reference

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

Feel free to search this API through the search bar or the navigation tree in the sidebar.

# drilldown.activeDataLabelStyle

Additional styles to apply to the data label of a point that has drilldown data. By default it is underlined and blue to invite to interaction.

In styled mode, active data label styles can be applied with the `.highcharts-drilldown-data-label` class.