By default, the Split property is False, which indicates that it has no effect. As an example, suppose the category-axis originally displays dates. By configuring the Format property as "date(value) format MMM", the category-axis can be transformed to represent months instead of individual dates. The Split property redefines the categories (groups consecutive values generated by the Format property into a distinct category) based on the Format property. The Split property has effect only if:

• Split property is True, 
• Format property is not empty and valid (by default the Format property is empty)

The following screen shot shows the category-axis when the Format property is "value left 7" and Split property on True