Alright I did open an issue asking essentially to ...

# squarelibraries

[Sam Garfinkel]

Alright I did open an issue asking essentially to make the Element types mutable, which would also involve making them public. I suppose there might be a better way, but it looks like right now you do need to use toElement then do a bunch of copy calls. If you want to mutate in-place it doesn’t seem possible.