This file demonstrates the use of a visual reminder on each layout depending on which database copy you are in,
See: https://en.wikipedia.org/wiki/Development,_testing,_acceptance_and_production for methodology
The reminder in the form of a colored background is hidden from normal users but visible to the admin user to prevent him from working in an environment while he thinks he is in another like doing some destructive testing in production while he thinks he is logged on to 'testing' (btdt)
Drawback is you don't see the actual color when in layout mode ...
Normally you would set the global var $$otap in the start script and not using the buttons below but this is for demo.
There are three users: admin, one and two. No passwords used
hope this helps,