For Google SketchUp 8 for personal use with a basic set of commands for manual modeling. A simple manual, but the ability to create complex pieces are not good enough.
For Google SketchUp 8 for personal use as the basis for modeling the instruction set for themselves are simple but the ability to create sophisticated yet not good enough.
For Google SketchUp 8 suitable for private use by the algorithm for the basic model with their own simple, but the ability to create a target with complex is not good enough.