Names the specific indexes in which an index term (<index-term>) should be used, for example, materials
, subject
, chemical
, regulations and code
.
Value | Meaning |
---|---|
A word or phrase | The name of the index, for example, species, chemical, subject, etc. |
Value | Meaning |
---|---|
One or more words | A word naming the index, or a series of words each representing a specific index. |