Spectra Precision FAST Survey Reference Manual - Manual (Page 390)

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 ALIISPOL Centerline File (Spain)
 ALN TerraModel Road Alignment File
 ALZ Form of CLIP Vertical Alignment File (Spain)
 ASC ASCII text file for point imports or Inroads Centerline File
 CL Carlson Horizontal Road Alignment File
 CR5 TDS Binary Coordinate File
 CRD Carlson coordinate file in binary form.
 DAT Carlson Localization File
 DXF Drawing file format that can be used for exchanging drawings.
 EGM Carlson EGM Geoid File
 FCL Carlson Field Code Library file.
 FFF Older form of Caice Cross Section File
 FLT Carlson Triangulation Mesh File
 G99 Carlson Geoid99 File
 GRD Carlson Grid File
 GSI Leica file extension for Raw files, Roading files, etc.
 INF Carlson User Preferences Settings File
 INP MOSS Roading Files (Horizontal and Vertical Alignment)
 LIS Form of IGRDS Cross Section File
 NOT Carlson Note File
 OBS Geodimeter Coordinate File
 OSD A form of Geopak Centerline File
 PLT Horizontal Alignment Report file from CLIP (Spain)
 POS Sokkia or Trimble Coordinate File
 PRO Carlson Vertical Road Alignment File
 RAS ISPOL Vertical Road Alignment File (Spain)
 RD5 TDS Road Alignment File
 RDS IGRDS Cross Section File
 REF Carlson Base Station Reference File
 RLN TerraModel Road Alignment File
 RW5 Carlson Raw Data File, TDS Raw Data File
 SC1 ISPOL Cross Section File (Spain)
 SCT Carlson Cross Section File
 SDR Sokkia file extension for Raw Files, Roading files, etc.
 SHP ESRI Shape File
 SUP Carlson Road Superelevation File
 TPL Carlson Road Template File
 TPT Carlson Road Template Transition File
 TRV Traverse PC Coordinate File and CLIP Format for Sections (Spain)
 XML LandXML File may contain a variety of file types (eg. Roading/DTM)
 XRS Form of Geopak Cross Section File