according to ISO/IEC 11179, the identifier should be presented as an alphanumeric character string. For sake of legibility, the identifier may be based on a series of English words reflecting its actual meaning (e.g. /term/, /normative authorization/, /preferred term/), but such a practice should not preclude the usage of additional names for the data category in English or any other language
[pseb]actually, in accordance with the last identification ISO12620-A... the /identifier/ contains the name of the category and the ISO identification.