# Welcome to the Highcharts Gantt JS (gantt) Options Reference

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

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# plotOptions.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 }`.