/** @struct  oyCMMapiFilter_s
 *  @ingroup module_api
 *  @extends oyCMMapi_s
 *  @brief   the module API 4,6,7 interface base
 *  
 *  The registration should provide keywords for selection.
 *  The api5_ member is missed for oyCMMapi5_s.
 *
 *  @version Oyranos: 0.1.10
 *  @since   2008/12/28 (Oyranos: 0.1.10)
 *  @date    2008/12/28
 */
