I’ve had a hard time being able to concentrate on programming for the past few days. I think I have resolved the naming problem, but in the physics section, the mechanics interface is still clunky. Moving a couple of the setup routines into distinct functions created some linker errors, because of the various assumptions involved, but I have those cleared up. I also have stubs for three of the four primary subdivisions of mechanics, and I am ready to start including functions for thermodynamics, electromagnetism, and the structure of matter. Chemical substances is set up to include more stubs, and so is Personal Studies.