The association filter is used to designate this program as an available open view for data file objects that have a title that matches one of the association filters which are set. If a data file object matches a filter 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 wpSetAssociationFilter method causes the existing association filters for this object to be replaced. To determine the existing association filters that are set on this object, a call to the wpQueryAssociationFilter method can be made. The wpSetAssociationType method can be called to set an association based on the type of data file object.