This class provides the set of standard root keys found in the registry on machines running Windows. The registry is a storage facility for information about applications, users, and default system settings. For example, applications can use the registry for storing information that needs to be preserved once the application is closed, and access that same information when the application is reloaded. For instance, you can store color preferences, screen locations, or the size of the window. You can control this for each user by storing the information in a different location in the registry.
