FTR document filters convert proprietary document formats into a format that the indexing engine understands. To set the filter for a particular class in the data model, set the FTRFilterNameC constant for that class. For example, the following statement sets the filter to ingr_ss for SmartSketch file objects:
IGRFile.FTRFilterNameC = "ingr_ss";
For more information about modifying the data model, see the Directa Customization Guide.