CLCL is a clipboard caching utility. All clipboard formats are supported. Template can be registered. Pop-up menu is displayed by 'Alt+C'. Menu can be customized. Items are pasted automatically. Picture is displayed on a menu. Tool tip is displayed on a menu. The format to leave and the format to save can be set up. The ignored window can be set up. The paste key for every window can be set up. Function is extensible with plug-in.