# JS API Reference

# Welcome to the Highcharts JS 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.

# pane.background.shape

The shape of the pane background. When `solid`, the background is circular. When `arc`, the background extends only from the min to the max of the value axis.