KLyX is a modern approach of writing documents with a computer which breaks with the tradition of the obsolete typewriter concept. It is designed for people who want a professional output with a minimum of time effort, without becoming specialists in typesetting. Compared to common word processors KLyX will increase the productivity a lot, since most of the type- setting will be done by the computer, not the author. With KLyX the author can concentrate on the contents of his writing, since the computer will take care of the look. KLyX uses the professional typesetting system LaTeX as backend. This means that it is very suitable for scientific work and guarantees first class output in a quality only known from books. In fact KLyX includes the best available formula editor used by thousands of mathematicians all over the world. The formula editor is seamlessly integrated and allows editing of equations inside the document. KLyX is also highly optimized and much faster than usual wordprocessors. It is also able to handle documents with several hundred pages, lots of pictures, tables and formulas included without becoming slow or instable. But of course you can also use this incredible and powerful tool for something trivial like writing a simple letter ;-)