The association type is used to designate this program as an available open view for data file objects that have a type that matches one of the association types which are set. If a data file object matches a type in a program object or program file object, the title of the program object or program file object appears in the data file object's Open cascade of its pop-up menu. A call to the wpSetAssociationType method causes the existing association types for this object to be replaced. To determine the existing association types that are set on this object, a call to the wpQueryAssociationType method can be made. The wpSetAssociationFilter method can be called to set an association based on the title of the data file object.