How is the Window registry context menu configured?

Registry structure? TD>HKCU

Keys	abbreviation	Description	Description
HKEY_CLASSES_ROOT	HKCR	Stores file association and COM object registretion	Store file associations and COM objects registration
HKEY_CURRENT_USER	Stores data associated with the accounts currently logged on	stores information related to the currently logged in account
HKEY_LOCAL_MACHINE	HKLM	Stores system-related information	Storage System System-related information
hkey_users	HKU	Stores information about all the Acco Unts on the machine	to store information about all accounts on the computer
hkey_current_config	HKCC	Stores information about the present machine profile	stores information about the currently configured file

The abbreviations in the table are generally used to write scripts and INF files.

1. HKEY_CLASSES_ROOTThis branch contains all file association mappings to support the drag-and-drop functionality of the Windows user interface, OLE information, Windows shortcuts, and COM core aspects.
2. HKEY_CURRENT_USERThis branch links to the HKEY_USERS section of the user who is currently logged on to the PC and includes information such as logins, desktop settings, and Start menu settings.
3. HKEY_LOCAL_MACHINEThis branch contains computer-specific information about hardware, software, and other preferences on a specific PC that is used for all users who log on to this computer.
4. HKEY_USERSThis branch contains personal preferences for each user of the computer, each of which is represented by the SID subkey located under the main branch.
5. HKEY_CURRENT_CONFIGThis branch links to the HKEY_LOCAL_MACHINE section that is appropriate for the current hardware configuration.
6. HKEY_DYN_DATAThis branch points to part of HKEY_LOCAL_MACHINE for the Plug and Play functionality of Windows, which is dynamic and will change as the device is added and removed from the system.

Registry Common data types

Data Type	Description
REG_Binary	Binary data. Usually in hexadecimal notation. An example is 0xa8
Reg_dword	Double Word (bits). Can be edited in either hexadecimal or decimal
Reg_SZ	A string. Figure 1 shows examples in the right pane.

Where is the registry file stored?

You can Windows\System32\Config find most of them in the folder

View the SAM, SECURITY, software, and SYSTEM files, which correspond to HKEY_LOCAL_MACHINE the same keys under the folder.

https://www.howtogeek.com/howto/windows-vista/how-to-clean-up-your-messy-windows-context-menu/

How is the Window registry context menu configured?