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.
Options for drill down, the concept of inspecting increasingly high resolution data through clicking on chart items like columns or pie slices.
The drilldown feature requires the drilldown.js file to be loaded, found in the modules directory of the download package, or online at code.highcharts.com/modules/drilldown.js.