Registry Editor displays the contents of the Registry database in six subtrees. The hierarchical structure that appears in Registry Editor is similar to how Windows Explorer displays hierarchical directory structures.
This section describes the hierarchical organization of the Registry and defines the overall structure of keys and value entries. The actual contents or location of a specific Registry subkey may differ from what is described here, depending on the services and software are installed. However, this description of the general organization will help you understand how to navigate the Registry.