Lists all MSP tag identifiers.
Values:
| IGMDTAG_ID_MSP_FORMAT | MSP metadata format identifier. |
| IGMDTAG_ID_MSP_KEY1 | Magic number. |
| IGMDTAG_ID_MSP_KEY2 | Magic number. |
| IGMDTAG_ID_MSP_WIDTH | Width of the bitmap in pixels. |
| IGMDTAG_ID_MSP_HEIGHT | Height of the bitmap in pixels. |
| IGMDTAG_ID_MSP_X_AR_BITMAP | X Aspect ratio of the bitmap. |
| IGMDTAG_ID_MSP_Y_AR_BITMAP | Y Aspect ratio of the bitmap. |
| IGMDTAG_ID_MSP_X_AR_PRINTER | X Aspect ratio of the printer. |
| IGMDTAG_ID_MSP_Y_AR_PRINTER | Y Aspect ratio of the printer. |
| IGMDTAG_ID_MSP_X_PRINTER_WIDTH | Width of the printer in pixels. |
| IGMDTAG_ID_MSP_Y_PRINTER_HEIGHT | Height of the printer in pixels. |
| IGMDTAG_ID_MSP_X_ASPECT_CORR | X aspect correction (unused). |
| IGMDTAG_ID_MSP_Y_ASPECT_CORR | Y aspect correction (unused). |
| IGMDTAG_ID_MSP_CHECKSUM | Checksum of previous 24 bytes. |
| IGMDTAG_ID_MSP_PADDING | Unused padding. |