The following codes are currently used in HFC data files:
| Field name in data file | Description (click to get full list of respective codes) |
|---|---|
| Country | Country / area codes |
| Collection | Collections |
| Source Type | Source Type |
| Note | Notes |
| RefCode | References |
| Split |
Used to indicate method of splitting: |
Further details on the structure of HFC data files can be found in Data Formats.