Overview of this book

LaTeX is a high-quality typesetting software and is very popular, especially among scientists. Its programming language gives you full control over every aspect of your documents, no matter how complex they are. LaTeX's huge amount of customizable templates and supporting packages cover most aspects of writing with embedded typographic expertise. With this book you will learn to leverage the capabilities of the latest document classes and explore the functionalities of the newest packages. The book starts with examples of common document types. It provides you with samples for tuning text design, using fonts, embedding images, and creating legible tables. Common document parts such as the bibliography, glossary, and index are covered, with LaTeX's modern approach.You will learn how to create excellent graphics directly within LaTeX, including diagrams and plots quickly and easily. Finally, you will discover how to use the new engines XeTeX and LuaTeX for advanced programming and calculating with LaTeX. The example-driven approach of this book is sure to increase your productivity.
Preface
Free Chapter
1. The Variety of Document Types
4. Working with Images
5. Beautiful Designs
6. Designing Tables
7. Contents, Indexes, and Bibliographies
8. Getting the Most out of the PDF
9. Creating Graphics
11. Science and Technology
12. Getting Support on the Internet
Index

Highlighting in a formula

In a complex formula or equation, it can be useful to emphasize a specific part. We can achieve this, for example, through highlighting by color or by framing. This is especially useful in presentations, where we could change the highlighted area from frame to frame while explaining.

We will take the challenge to work on more than simple basic math. So we can verify that the method works in arbitrary situations. So our original material will be the amsmath matrices. We will illustrate a matrix transposition by highlighting submatrices and drawing arrows.

How to do it...

We will use TikZ for this. Such a big graphics package may seem to be a bit heavy for such a purpose at first. But it provides us with consistent styles and allows us to do nearly anything graphically.

Let's do an example step by step:

\documentclass{article}
2. Load the amsmath package, so we can write matrices:
\usepackage{amsmath}
3. Load the tikz package:
\usepackage{tikz}