What does “2N363PNP” mean

You have to obey all the limits. The maximum power is a lot less than maximum voltage * maximum amperage.

Remember, dissipating power is what makes the transistor hot.

For bipolars, the absolute max values are not as useful as the safe-operating-area plot:

You'll notice one of the bounds is the maximum voltage, one is the maximum amperage, and one is the maximum wattage. Stay within the bounds to keep your transistor happy. (Also you need to avoid overheating: look at the Pc-Ta plot, or derive it yourself with the junction-to-ambient thermal resistance.)

That appears to be just an extension of the saturation region if CB and BE are both forward biased: http://en.wikipedia.org/wiki/Bipolar_junction_transistor#Regions_of_operation

It looks like your definition of saturation region is overly narrow.

If BE is reverse biased and BC is forward biased, then it still acts like a transistor, but because of the physical way bjt's are setup, you have much less gain than forward active.