The F1GP Backdrop datatype is picture datatype for reading any of the
backdrop files (filename suffix .bkg) supplied with Geoff Crammond's
Formula One Grand Prix game (aka World Circuit).

 PERMSSN    UID  GID    PACKED    SIZE  RATIO     CRC       STAMP          NAME
---------- ----------- ------- ------- ------ ---------- ------------ -------------
[unknown]                 1498    2334  64.2% -lh5- 4aec Feb 11  1999 f1gp_bkg_dt.info
[unknown]                 1972    3064  64.4% -lh5- b3e5 Mar 23  1999 f1gp_bkg_dt/Classes/Datatypes/f1gp_bkg.datatype
[unknown]                 1934    3024  64.0% -lh5- 8d6f Mar 23  1999 f1gp_bkg_dt/Classes/Datatypes/f1gp_bkg.datatype.020
[unknown]                  100     130  76.9% -lh5- 36e8 Dec 28  1996 f1gp_bkg_dt/Devs/Datatypes/F1GP Backdrop
[unknown]                  292     473  61.7% -lh5- 21fc Jan  6  1997 f1gp_bkg_dt/Devs/Datatypes/F1GP Backdrop.info
[unknown]                 3696    8660  42.7% -lh5- 11b2 Mar 23  1999 f1gp_bkg_dt/F1GP_BKG_dt.guide
[unknown]                 1156    2193  52.7% -lh5- 1add Feb 11  1999 f1gp_bkg_dt/F1GP_BKG_dt.guide.info
[unknown]                  793    1832  43.3% -lh5- 985e Feb 11  1999 f1gp_bkg_dt/Install_F1GP_BKG_Datatype
[unknown]                 1258    2116  59.5% -lh5- 729d Feb 11  1999 f1gp_bkg_dt/Install_F1GP_BKG_DataType.info
---------- ----------- ------- ------- ------ ---------- ------------ -------------
 Total         9 files   12699   23826  53.3%            Mar 23  1999