Oh, several. [Enjoy all the specifics you are getting on the amount of points.]
Only previous time in this prison would count, not Sentience's prison.
We don't tell you exactly how many points you have or exactly how many you need because while we do like to reward rehabilitation-friendly acts we do not want you to focus so tightly on the points. After all we could take them all away at any time if we wanted. It's the behavior that's important. Improve your behavior and you need not worry. Perhaps you'll even be less fixated on obtaining things like weaponry. So, no list. No charts. No diagrams.