Damn, rust really embrace the "Hey, Can I copy your homework?" Meme. I like rust btw, it's just funny how often I see something along the line of "it's like X, but in rust!"
I don't care how much you think your code is readable, plain text comments are readable by everyone no matter the proficiency in the programming language used. That alone can make a huge difference when you're just trying to understand how someone handled a situation.
Siemens makes NX. Catia is made by Dassaults. They compete for the same space in the market