If set to true will reverse the mouse wheel direction. The normal direction is down for "zoom out", up for "zoom in".
The field containing the point date. It is used as a default categoryField for all series.The data item field value must be either: Date instance; String parsable by new Date([field value]) or String in ASP.NET JSON format, i.e. "\/Date(1320825600000-0800)\/".
Serialize current instance to Dictionary