BTEqualStrategyNumber BTGreaterEqualStrategyNumber BTGreaterStrategyNumber BTLessEqualStrategyNumber BTLessStrategyNumber BTMaxStrategyNumber HTEqualStrategyNumber HTMaxStrategyNumber InvalidStrategy RTAboveStrategyNumber RTAdjacentStrategyNumber RTBelowStrategyNumber RTContainedByStrategyNumber RTContainsElemStrategyNumber RTContainsStrategyNumber RTEqualStrategyNumber RTGreaterEqualStrategyNumber RTGreaterStrategyNumber RTKNNSearchStrategyNumber RTLeftStrategyNumber RTLessEqualStrategyNumber RTLessStrategyNumber RTMaxStrategyNumber RTNotEqualStrategyNumber RTOldAboveStrategyNumber RTOldBelowStrategyNumber RTOldContainedByStrategyNumber RTOldContainsStrategyNumber RTOverAboveStrategyNumber RTOverBelowStrategyNumber RTOverlapStrategyNumber RTOverLeftStrategyNumber RTOverRightStrategyNumber RTPrefixStrategyNumber RTRightStrategyNumber RTSameStrategyNumber RTSubEqualStrategyNumber RTSubStrategyNumber RTSuperEqualStrategyNumber RTSuperStrategyNumber StrategyNumber

RTKNNSearchStrategyNumber #define RTKNNSearchStrategyNumber   15 /* for <-> (distance) */