Re: Lack of detailed documentation

The following documentation comment has been logged on the website:

Page: https://www.postgresql.org/docs/12/functions-geometry.html
Description:

On:  https://www.postgresql.org/docs/current/functions-geometry.html

The functions aren't defined, nor have pointers.  For instance:
*       Scaling/rotation        box '((0,0),(1,1))' * point '(2.0,0)'

I see how it can be scaling (or shearing), but how does it do rotation?
Or maybe when the points x^2+y^2 == 1, it's interpreted at rotation?

Each operator needs a full explanation...