To create a complete plugin with a stylesheet and administration panel, you should have already followed the Storing stylesheet data in user settings recipe in Chapter 3, User Settings and Administration Pages, to have a starting point for this recipe. Alternatively, you can get the resulting code (Chapter 3/ch2-private-item-text-edit-stylesheet/ch2-private-item-text.php) from the downloaded code bundle and rename ch2-private-item-text-edit-stylesheet to ch2-private-item-text.

It is also possible to just create a new empty plugin file and follow this chapter's recipes by making a folder called ch2-private-item-text in your plugin directory with a text file called ch2-private-item-text.php, and only adding a standard plugin header at the top.