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Shell is an extension of Windows File Explorer that can be used to create high-performance context menu items. And gives user a high level of control over context menu of Windows File Explorer.
The Right Click Menu or the Context Menu is the menu, which appears when you right-click on the desktop, file, folder or taskbar in Windows. This menu gives you added functionality by offering you actions you can take with the item.
Shell is all you need to customize or add new items with several functions to Windows File Explorer Context menu and Much More.(cascade menus, advanced menus, multi-level menus, command menus, separator).