Beautiful. Thank you. My only suggestion to make it slightly more clear is this:
Where it reads:
On this page you can view your SESSION values, whether you are logged in or not.
Perhaps it would be more clear with something like this:
The page you are now reading was served up by MODx (in case you didn’t know), and you can view your SESSION values below. Note that they will change depending on whether or not you are logged in.
Try logging in as the test user (test - testing) and you’ll see a new menu item on the right. Try logging in as the guest manager user (guest - guestuser). Log in as both! Log in from different browsers or computers at the same time, and you can watch how these values change.