# Welcome to the Highcharts Gantt JS (gantt) 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.xrange.partialFill

A partial fill for each point, typically used to visualize how much of a task is performed. The partial fill object can be set either on series or point level. When set as a number, works as `{ amount: number }`.