Intuition is the windowing system and graphical user interface (GUI) toolkit of AmigaOS, providing the foundational WIMP (Windows, Icons, Menus, Pointer) environment. Introduced with the original Amiga 1000 in 1985, it handles window management, menus, gadgets (widgets), and user input events through a message-based system, residing in the Kickstart ROM. It was notable for supporting multiple screens with different resolutions and color depths simultaneously, along with sophisticated features like overlapping windows and dynamic menu systems that were advanced for mid-1980s home computers.