A String expression that defines the key of the FormatContent object to be
removed.
The Remove method removes a FormatContent object based on
its key. The Clear method clears
all FormatContent objects from the collection. If the PivotBarVisible
property includes the exPivotBarAllowFormatContent flag, the control's context menu includes the
FormatContent objects. If the exPivotBarAllowFormatContent flag is missing from the PivotBarVisible
property, the control's context menu displays no FormatContent
objects. The Count property
specifies the number of FormatContent objects in the collection. The Item
property accesses a FormatContent object based on its key.