Surface counting and correction of elements with inversive normals is new feature that comes with StaaDXF as well. With respect to the fact that presentations of stresses and crosscutting forces of shell elements depend on the position of upper and lower elements' fiber, it is understandable that there is a need that for each surface of your model, the fibers be conformable. Now you have a possibility to count your surfaces with only "one click", while you can correct all elements with inversive normals with the "second click". You could visually check all mentioned operations as StaaDXF 2.0 has a graphic editor. It will be clear to you from the following screenshots.
NEW Features : 
