31. Cookies are a component of the most common authentication method used by the X Window System . 32. Later also precompiled versions of the X Window System and the IceWM window manager became available. 33. Linux kernel is X . org implementation of the X Window System uses the MIT License. 34. "' aterm "'is the AfterStep terminal emulator for the X Window System . 35. In the X Window System , every window is contained within another window, called its parent. 36. The program " startx " starts the X Window System on a new virtual console. 37. Determination of X Window System capabilities is typically performed by checking for the existence of the DISPLAY variable. 38. Sun developed an X Window System distribution implementing the OPEN LOOK look and feel, calling it OpenWindows. 39. The latter format is XPM3, the common format used for the X Window System since about 1991. 40. The original program for this purpose was " xmh ", an X Window System application.
