Does `A` need to be a built-in?

I noticed after upgrading to JSXGraph 1.7.0 that I now get a warning for some diagrams that A is a predefined value. I defined points A, B and C, but A is defined as a built-in alias for the area function. There's one other single-letter alias, R, for radius.

A is commonly used to name a point in a diagram. Does it make sense to have this alias and hence produce a warning?