# 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.

# xAxis.uniqueNames

Applies only when the axis `type` is `category`. When `uniqueNames` is true, points are placed on the X axis according to their names. If the same point name is repeated in the same or another series, the point is placed on the same X position as other points of the same name. When `uniqueNames` is false, the points are laid out in increasing X positions regardless of their names, and the X axis category will take the name of the last point in each position.