Axis grid lines are straight lines on a chart that provide a framework for measurement and reference. By default, grid lines are white, but the color can be customized. Typically, the x axis and Stack, Cluster and Depth (z axis) are used for label items and the Fact, Fact (Stack) and Fact (Depth) (y axis) shows values or facts (measurable items), such as units and amounts.
You can view or hide these axis gridlines depending on the chart you are designing.
To toggle the display of axis grid lines: