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Although you only have one volume in front of you, writing four volumes and 1600 pages on a single subject needs some form of justification. And then on the other hand, why write even more?! Can´t, at least, the preface of something that long be short?! Very well, so let´s keep it short. It is my sincere hope that the series "´lEX in Practice" will be useful for your own ´lEX work. But please, before you get started, read the "Notes on ´´lEX in Practice´ ," because it instructs you how to use this series. You will find these notes on pages xxvii-xxxvi. The fourth and last volume deals with two different subject areas. First of all, there are the so-called output routines which are responsible for putting together the pages as generated by ´lEX. You will be amazed at how many different things can be done with ´lEX´s output routines. The second subject area we are dealing with in this volume are tables. About a hundred different tables you can choose from should provide you with a starting point in the selection of tables.

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