Parse and convert an ASCII DXF file to a reference underlay in one step. Unitless files whose extents exceed UNITLESS_MM_EXTENT_THRESHOLD drawing units are assumed to be in millimetres (with a warning).
Optional
Parse and convert an ASCII DXF file to a reference underlay in one step. Unitless files whose extents exceed UNITLESS_MM_EXTENT_THRESHOLD drawing units are assumed to be in millimetres (with a warning).