Suppose you need a content type that resembles an existing one or you need a backup inclusive the content..
After activating the module, the clone possibility appears.
Give it a name. Choose cloning the content if you want. One can delete the content of the original. So the new content type is a backup and the old one can be reused.
The new content type
With content if needed
Don't forget to activate the fields. Default they are disabled.