Lists all PCD tag identifiers.

Values:

IGMDTAG_ID_PCD_FORMAT	PCD metadata format identifier.
IGMDTAG_ID_PCD_IPICA_RESERVED	IPICA reserved.
IGMDTAG_ID_PCD_IPICA_IMAGE_PACK_PARAMS	IPICA image pack params.
IGMDTAG_ID_PCD_IPICA_BASE4_STOP_OFFSET	IPICA base4 stop offset.
IGMDTAG_ID_PCD_IPICA_BASE16_STOP_OFFSET	IPICA base16 stop offset.
IGMDTAG_ID_PCD_IPICA_IPE_STOP_OFFSET	IPICA IPE stop offset.
IGMDTAG_ID_PCD_IPICA_IP_INTERLEAVE_RATIO	IPICA IP interleave ratio.
IGMDTAG_ID_PCD_IPI_SIGNATURE	IPI signature.
IGMDTAG_ID_PCD_IPI_VERSION_NUMBER	IPI version number.
IGMDTAG_ID_PCD_IPI_SOFTWARE_RELEASE	IPI software release.
IGMDTAG_ID_PCD_IPI_IMAGE_MAG_DESCRIPTION	IPI image mag description.
IGMDTAG_ID_PCD_IPI_IMAGE_SCAN_TIME	IPI image scan time.
IGMDTAG_ID_PCD_IPI_LAST_MODIFICATION_DATE	IPI last modification date.
IGMDTAG_ID_PCD_IPI_MED_ORIGINAL_RECORDING	IPI med original recording.
IGMDTAG_ID_PCD_IPI_TYPE_ORIGINAL_RECORDING	IPI type original recording.
IGMDTAG_ID_PCD_IPI_SCANNER_VENDOR	IPI scanner vendor.
IGMDTAG_ID_PCD_IPI_SCANNER_PRODUCT	IPI scanner product.
IGMDTAG_ID_PCD_IPI_SCANNER_FIRMWARE_LEVEL	IPI scanner firmware level.
IGMDTAG_ID_PCD_IPI_SCANNER_FIRMWARE_DATE	IPI scanner firmware date.
IGMDTAG_ID_PCD_IPI_SCANNER_SERIAL_NUMBER	IPI scanner serial number.
IGMDTAG_ID_PCD_IPI_SCANNER_PIXEL_SIZE	IPI scanner pixel size.
IGMDTAG_ID_PCD_IPI_EQUIPMENT_MANUFACTURER	IPI equipment manufacturer.
IGMDTAG_ID_PCD_IPI_PHOTONAME_CHAR_SET	IPI photoname char set.
IGMDTAG_ID_PCD_IPI_PHOTONAME_ESC_SEQ	IPI photoname esc seq.
IGMDTAG_ID_PCD_IPI_PHOTONAME	IPI photoname.
IGMDTAG_ID_PCD_IPI_SBA_DATA	IPI SBA data.
IGMDTAG_ID_PCD_IPI_COPYRIGHT_STATUS	IPI copyright status.
IGMDTAG_ID_PCD_IPI_COPYRIGHT_FILENAME	IPI copyright filename.