# 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.

# series.pie.states.hover.brightness

How much to brighten the point on interaction.

In styled mode, the hover brightness is by default replaced by a fill-opacity given in the `.highcharts-point-hover` class.