# Supported linked file types

Linked files are files linked to the job that contain points, lines, arcs, polylines, and other map items such as alignments and surfaces that you want to be able to view and select in the map.

To link files to the job, use the Layer manager. See Managing layers using the Layer manager.

Supported linked file types are:

- BIM models:

  - AutoCAD Drawing files (.dwg)

  - IFC (Industry Foundation Classes) files (.ifc, .ifczip)

  - Navisworks Drawing files (.dwg)

  - SketchUp files (.skp)

  - TrimBIM (Trimble BIM) files (.trb)

- Point and line files:

  - CSV and TXT files

  - AutoCAD Drawing Exchange Format (DXF) files (.dxf)

  - ESRI Shapefiles (.shp)

  - RXL files (.rxl)

  - LandXML files (.xml)

  - 12d Model files (.12da)

- Surfaces:

  - Digital terrain models (.dtm .ttm .xml, .dxf, .12da)

  - Surfaces in BIM models

- Scan points and point clouds (.tsf and .rwcx)

- Road files:

  - RXL files (.rxl)

  - LandXML files (.xml)

  - 12d Model files (.12da) – typically used in Roads

  - GENIO roads (.inp, .crd, .mos)

- TXL tunnels (.txl)

- Surpac files (.str) – typically used in Mines

You can also add background imagery and data to the map using georeferenced image files, Trimble Maps, or a web map provider. See Adding background maps.