Time for action – adding hyperlinks

We shall load the hyperref package and inspect its effect:

1. Open the file preamble.tex, which we used in the previous chapter. At its end, add this line:

   \usepackage{hyperref}

2. Save this document under the same name.

3. Open our book of equations from the previous chapter; we called it equations.tex.

4. Typeset the document twice without making any changes. Let's see how the document now appears!

   

5. The Chapter 1 looks like the following screenshot:

   

What just happened?

By just loading the hyperref package, our document has significantly changed:

• We got a bookmark bar, which allows us to easily navigate through the document.

• Each entry in the table of contents has become a hyperlink to the beginning of the corresponding chapter respectively. Hyperlinks are marked by red frames.

• All cross-references have become hyperlinks.

This is a great improvement for electronic versions of our documents! The print version would not be affected—neither the bookmarks nor those red frames would...