Share Email Facebook Twitter LinkedIn Understanding LandXML Import and Export Topics in this section About LandXML Import and Export Use the Autodesk Civil 3D LandXML import and export commands to import and export drawing data in LandXML format. About Supported LandXML Data for Import and Export LandXML supports Autodesk Civil 3D drawing data for import and export. About LandXML and Sites In an Autodesk Civil 3D drawing, a site is used to collect or group sub-collections, such as parcels, alignments, and gradings, by a topology that they share. Parent topic: LandXML Import and Export