Note: l2h omitted two figures. DG.
The document preparation system , which contains about 900 commands, is based on the original TeX or plain-TeX by Donald E.Knuth. This programm is especially helpful for the production of mathematical texts. Since TeX is very difficult to deal with, adds to this version a collection of commands that simplify typesetting and individual design of articles, books, letters or whatever. Your primary concern in working with should be to concentrate on the description of the logical structure of your text. While other text design programms mainly focus on the visual effect of the text, approach to typesetting can be characterized as being mainly logical, not visual. Thus in you must think first of how your text should be structured: you have to type in commands LaTeX needs to format the text. On your input screen you don't see the final layout of your text. encourages you to think of the logical structure: You can put an equation like this... For all x:
...or like this