Actual Window Manager _verified_ — Fresh

That is the miracle of the actual window manager. Not that it manages windows, but that it convinces you—every single day—that windows exist at all. End of piece.

On Linux (Wayland), the kernel's DRM (Direct Rendering Manager) and KMS (Kernel Mode Setting) control the actual display hardware. The compositor talks to DRM via libdrm to flip buffers. On Windows, the DWM talks to the DXGI kernel driver. On macOS, WindowServer talks to the IOKit framebuffer. actual window manager

You move your mouse over a terminal window. You click. A cursor appears. That is the miracle of the actual window manager