The graphic is useful, but also hard to "copy and paste" or show in the context of a page of documentation.

I suggest that having a "compact text based equation" would be a significant add as well.

Example for a typical "policy group" with include, exclude and manual groups :

Could be expressed in an equation form like:

"just_a_demo" =
(
  (allow_just_a_demo +allow_manual_just_a_demo)
  -
  (deny_just_a_demo +deny_manual_just_a_demo)
)