Lists all CAL tag identifiers.
| IGMDTAG_ID_CAL_FORMAT | CAL metadata format identifier. |
| IGMDTAG_ID_CAL_SPECVERSION | Spec version. |
| IGMDTAG_ID_CAL_SRCDOCID | Source system document identifier. |
| IGMDTAG_ID_CAL_DSTDOCID | Destination system document identifier. |
| IGMDTAG_ID_CAL_TXTFILID | Text file identifier. This record contains a string indicating the document page that this image page contains. |
| IGMDTAG_ID_CAL_FIGID | Figure or table identifier. This is the number by which the image page figure is referenced. |
| IGMDTAG_ID_CAL_RTYPE | Raster data type. This is the format of raster image data that follows the header record data block in this file. |
| IGMDTAG_ID_CAL_RORIENT | Raster image orientation. |
| IGMDTAG_ID_CAL_RPELCNT | Raster image pel count. |
| IGMDTAG_ID_CAL_RDENSITY | Raster image density. |
| IGMDTAG_ID_CAL_SRCGPH | Source system graphics filename. |
| IGMDTAG_ID_CAL_DOCCLS | Document security label. |
| IGMDTAG_ID_CAL_FOSIPUBID | PUBLIC identifier of an associated FOSI. |
| IGMDTAG_ID_CAL_NOTES | Notes information that is not applicable to any of the other records in the CALS raster file header. |