RASTER_VAR Secondary raster definition table, listing the variable parampsENTRY Entry or Record Number  I8 ENTRY RASTER_PTR Pointer into primary raster table RASTER I11 RASTER_PTR RAS_ID Raster ID number  I4 Ras RAS_VAR  Raster variation index  I6 RasVar RV_DESC  ARaster variation description A A65 Raster variatio EXPTIME MExposure time in seconds F10.3 Exp. time LINELIST_PTR QPointer into line list table LINELIST I11 LINELIST_PTR LL_ID ULine list ID number I9 Linelist COMP_ID WCompression method ID  I4 Comp COMP_OPT YCompression option parameter  I5 Opt DATAWIN_PTR [Pointer into data extraction window list table DATAWIN I11 DATAWIN_PTR DW_ID _Data window list ID number I9 Win list IEF_ID aInter-instrument event flag ID  I5 IEF VDS_ORIENT cVDS orientation, either 0 (row) or 1 (column).  I7 VDS_ORIENT VDS_MAP eVDS mapping mode on (1) or off (0).  I7 VDS_MAP TEL_RATE gEstimated required telemetry rate, Low/Medium/High  A2 TR DURATION hEstimated duration of the raster, in seconds F10.3 Duration USABLE lEither Y or N, normally Y  A1 USABLE