Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. WTerm is a terminal emulator for the X Window System. IT is a fork of rxvt, designed to be lightweight, but still full of features. ITs appearance was designed for NeXTSTEP style window managers such as Window Maker. SOme features include customizable background images, background color tinting, and zero overhead pseudo-transparent background. THe terminal support for Latin, Chinese, Kanji, and Greek characters. A Terminal emulator, terminal application, term, or tty for short, is a program that emulates a "dumb" video terminal within some other display architecture. THough typically synonymous with a command line shell or text terminal, the term terminal covers all remote terminals, including graphical interfaces. A Terminal emulator inside a graphical user interface is often called a terminal window.