I used to use Pages and save my documents to the cloud. All of a sudden when I want to save my work, I am being asked to sign in using the Web DAV server's address and my sign in name and password. I don't know the Web DAV address.
Thanks Tom. Now I understand. I used to use MobileMe to save my documents and that program is no longer used. It appears iCloud is more for temporary storage of documents so they can be accessed by multiple devices.