The Stack-Manager is confusing enough. It’s even more confusing now that it is called Sandbox. 
Let us make an agreement it is only made more confusing by the use of double negatives:
Currently:
Disable Persistance - ON/OFF don’t persist your entites to a file
should be changed to:
Proposed Change:
Entity Persistance - YES/NO
the same thing should be fixed for 'Disable Backup’
These are two very simple text changes that would make a very big difference in usability.
I think @judas put it best, ’ a user interface is like a joke; if you have to explain it, it isn’t that good…’