Libraries are collections of shared code. They're common in Python, where they're also called "modules," but they're also ...

If you've heard of Python but don't know where to start with it, these five scripts can help boost your productivity.

The script is packaged as a python macro for FreeCAD. In describing the shortcomings of what’s already out there [Christian] does mention the use of EagleUp to model boards in Google SketchUp.