| OneLevelBased | The family is placed referencing a single level. | 
| OneLevelBasedHosted | The family is placed referencing a single level and host. | 
| TwoLevelsBased | The family is placed referencing two levels (e.g. a column). | 
| ViewBased | The family is view-specific (e.g. a detail annotation) | 
| WorkPlaneBased | The family is placed on a work plane or face. | 
| CurveBased | The family is based on a line and placed on a work plane. | 
| CurveBasedDetail | The family is based on a line and place on a specific view (e.g. a detail component). | 
| CurveDrivenStructural | The family is a structural curve driven member (beam, brace, or slanted column) | 
| Adaptive | The family is an adaptive family. | 
| Invalid | This signals an invalid value for the enum. |