these are compatible with windows and mac operating system. this is a god who longs for his people to be in relationship with him, and not just that, but god longs for his whole creation to be renewed. the following information is a brief description of what is known about this file. we have 9 and the big ones take 4 hours each and the small ones 2 hours - 3 in a day is about my limit! im not sure the details it would be wise to read up on it. 