Summer of Math Exposition

I don’t understand what this is about. It is a lot of snippets of code with no explanation

Add some explanation! For a lot of people, reading code and graphs is difficult and doesn't tell them much.

Whilst I have no doubt that this work has a great deal of value, I'm not really sure what to make of it. When I clicked on the thumbnail, it linked me to Google Docs, and a piece of computer code, which I assume programmed the image shown in the thumbnail. I even read the code, thinking that perhaps there would be comments that explained what the piece was about. Without any explanation, I'm a little bit lost, I'm afraid. Again, I'm sure that the code shows a good deal of skill, but there is no writing to go with it, nor anything to interact with. Apologies if I have missed something!