Key: . These conversions are not implemented... yet? GroupTopology is ignored 1 supported. The implementation is obvious/unambiguous 2 supported. Polygroup faces containing any input triangle are selected 3 supported. Polygroup edges containing any input triangle edge are selected, but polygroup edges containing only input triangle vertices are not. 4 supported. Polygroup corners coinciding with any input triangle vertex are selected 5 supported. All mesh vertices along the polygroup edge are selected 6 supported. All mesh vertices coinciding with polygroup corners are selected indicates GroupTopology must not be null for this combination. If this symbol is missing GroupTopology is ignored