Explorer plan (free-of-charge): Import: RSDOC, RSDOCX, DSPCB IDF, TXT (Point Curve text files), Images (JPG, BMP, PNG) Export: RSDOCX, STL, OBJ, 3D PDF (facets only) CreatorandEngineer plans (paid): Import: RSDOC, RSDOCX, DSPCB IDF, OBJ, SKP, DXF, DWG, STEP, IGES, STL, ...