# Status structures

NaturalFax records the status of fax sessions and the status of each document processed during a fax session.

Structure name | Stores the status of...
NFX_FAX_STATUS | The currently active fax session. The status information is current with respect to the most recent NaturalFax event. To view the structure definition, refer to the dependent function nfxGetSessionStatus.
NFX_DOC_STATUS | One document entry in a particular document queue. To view the structure definition, refer to the dependent function nfxGetDocStatus.
NFX_CHECK_STATUS | The image format found on each page of a TIFF file. To view the structure definition, refer to the dependent function nfxCheckTIFF.