Last time I checked, there is no file versioning for arbitrary file type on iCloud, meaning that if I made a mistake and modified a file by error, there is no w

Last time I checked, there is no file versioning for arbitrary file type on iCloud, meaning that if I made a mistake and modified a file by error, there is no way to get the old file back. I decided that I was not going to put any important document on iCloud but should rely on Dropbox or Google Drive. (It seems that certain apps -- the type that I never use -- support file versioning within the app. That's not useful.)