Seonglae ChoWindow Compositor
각각의 윈도우 화면을 갱신하고, 겹쳐진 윈도우들을 하나의 화면으로 보여주는 기능
Display Servers
Display Server Protocols
Compositing window manager - Wikipedia
A compositing window manager, or compositor, is a window manager that provides applications with an off-screen buffer for each window. The window manager composites the window buffers into an image representing the screen and writes the result into the display memory.
https://en.wikipedia.org/wiki/Compositing_window_manager
