| Kind | Value | annotation | ||
| enumeration | 1_very weakly incurving | |||
| enumeration | 2_straight | |||
| enumeration | 3_very weakly reflexing | |||
| enumeration | 4_weakly reflexing | |||
| enumeration | 5_moderately reflexing | |||
| enumeration | 6_strongly reflexing | |||
| enumeration | 7_very strongly reflexing |