Why are dying patient's in a hospital bed moved next to the window?

In a semi-private room, it may provide for more privacy (the family of the roommate does not have to "pass by" the dying patient to get to their loved one). In a private room, I have no idea why this would be done! I have heard of opening Windows to let the patient's "spirit out" (a Native American custom), but I have never heard of moving a dying patient closer to the window in a private room.