Philip Schlickenmaier frequently works with 3D views. However, there are times that the built-in isometric view controls don't meet his needs, especially when the far and near edges visually align in the wireframe visual style. He created these new functions for 3D view control. After you load the LISP file, the command names are VP, VPP, VP-, and VPP-. The LISP code is using the Vpoint command, so you can easily tailor these commands to your liking or create some of your own.