File > DXF Construction Line File Format

DXF format is an AutoCAD drawing exchange file with the extension ".DXF".

This format is useful for exchanging model data with other CAD software.

Construction lines are saved as a series of AutoCAD DXF POLYLINE entities.

Construction lines can be imported as a series of AutoCAD DXF POLYLINE, LINE, 3DLINE or 3DFACE entities.