ESLC_HINT_DIRECTVECTORS_NONE | 0 | No direction vectors -- hydropathy is spherically arranged |
ESLC_HINT_DIRECTVECTORS_BONDAXIS | 1 | Hydropathy is focused along the bond axes |
ESLC_HINT_DIRECTVECTORS_PI_LONEPAIRS | 2 | Hydropathy is focused along lone pairs and pi orbitals |