How to add text to a side section of the template

[LanceV]

I selected one of the templates to use as the basis for creating my site. On one of the samples given, the template has a piece of paper attached to the wall with a push pin. There is text written on the paper, in the sample, it says: About Us, Discography, Audio, etc. You can see the attached screenshot. How do I add my own custom text there? I don't see how to go about entering text onto that piece of paper. Any help would be much appreciated. Thanks!