Bonus Section .DXF Objects Included this month is a collection of .DXF files which are three-dimensional objects for use in virtually all major commercial rendering packages. Beef up your 3D library with trees, military aircraft, an excellent human heart, and Beethoven's bust! To use these objects simply load up your favorite rendering package and select the .DXF object importer. Once the object is loaded it can be modified and/or saved in your program's native object format.