Links are the glue between passages. They are the equivalent of being told to turn to another page in a nonlinear book; in gamebooks, for example, you do this to make decisions for the main character. But this isn't the only possible kind of link. Deena Larsen describes a whole taxonomy of links in Fundamentals: A Rhetorical Devices for Electronic Literature.

Links are marked in the text of a passage by two square brackets, [[like this]]. For simplicity's sake, the text between the brackets matches the title of the passage it links to — remember that passage titles are case-sensitive.

It is possible to change what text is shown to the reader for a link, however. This can come in handy if you need to put a capitalized passage title in the middle of a sentence, for example. The format for this kind of link is slightly different: [[displayed text|title of passage]].

If a story has a broken link in it, it is displayed with a red background in your story, and clicking it shows this message:

The passage 'The newspaper' doesn't exist.

Finally, you may build links to external sites. These links look like this: [[Google|http://www.google.com/]] You may link to any address that a reader's Web browser will understand.