| Kind | Value | annotation | ||
| enumeration | 1_very thin | |||
| enumeration | 2_very thin to thin | |||
| enumeration | 3_thin | |||
| enumeration | 4_thin to medium | |||
| enumeration | 5_medium | |||
| enumeration | 6_medium to thick | |||
| enumeration | 7_thick | |||
| enumeration | 8_thick to very thick | |||
| enumeration | 9_verythick |