| 0 | | Returns the identifiers of all fields. |
| &H1 | | Returns only identifiers of fields which are both changeable and deleteable. |
| &H2 | | Returns only identifiers of fields which are unchangeable. |
| &H4 | | Returns only identifiers of fields which are undeleteable. |
| &H100 | | Returns only identifiers of fields which have the type txFieldLinkTarget. |
| &H200 | | Returns only identifiers of fields which have the type txFieldExternalLink. |
| &H400 | | Returns only identifiers of fields which have the type txFieldInternalLink. |
| &H800 | | Returns only identifiers of fields which have the type txFieldPageNumber. |
| &H1000 | | Returns only identifiers of fields which have the type txFieldHighlight. |
| &H2000 | | Returns only identifiers of fields which have the type txFieldTopic. |
| &H8000 | | Returns only identifiers of fields which have the type txFieldMSWord. |
| &H10000 | | Returns only identifiers of fields which have the type txFieldHighEdit. |
