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3. The Registry > 3.2. The Structure of the Registry

The Structure of the Registry

There are five primary, or root, branches of the Registry, each containing a specific portion of the information stored therein. These root keys can’t be deleted, renamed, or moved, because they are the basis for the organization of the Registry. They are:

HKEY_CLASSES_ROOT

This branch contains the information that comprises your Windows file types. See the discussion of file types in Chapter 4 for details on the structure of most of the entries in this branch. A few special keys here, such as CLSID (short for Class ID), contain “registered” components of Windows and your installed applications. The contents of HKEY_CLASSES_ROOT are generally easy to edit, but it’s best not to mess with anything in the CLSID branch, because almost none of it is in plain English.


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