The X-axis' labels are staggered, if the axis scale type is Qualitative or DateTime (except for Year). And, the labels' direction is made parallel to that of the axis (e.g. the AxisLabel.Angle is 0 if the diagram is not rotated, and the AxisLabel.Angle is 90 when the diagram is rotated). In addition, the labels' text is affected by the measurement unit specified (e.g. Year, Month, or Day), and the superfluous labels are made hidden.