| Permitted value | Language | Designation | Definition |
|---|---|---|---|
| 4th edition | EN | 4th ed. | 4th edition |
| 3rd edition | EN | 3rd ed. | 3rd edition |
| 2nd edition | EN | 2nd ed. | 2nd edition |
| 1st edition | EN | 1st ed. | 1st edition |
| Not known | EN | Edition not known | It is not known which edition was used |
| Name | Value |
|---|---|
| LABEL | WHO_GRADE_VERSION |
| LEVEL | REQUIRED |