# 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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# xAxis.crossing

The value on a perpendicular axis where this axis should cross. This is typically used on mathematical plots where the axes cross at 0. When `crossing` is set, space will not be reserved at the sides of the chart for axis labels and title, so those may be clipped. In this case it is better to place the axes without the `crossing` option.