To show you how to implement this in your own business logic, the app has a _JustForTesting subfolder, which contains a page extension for page 22 (Customer List) that shows how you can simply create an action on a page and implement WaldoNAVPad by calling the class functions:

The Initialize function will load the text that is linked to the current record. The ShowAndSaveTexts method will show the texts (in this case, in the HTML editor) if the user chooses to see it.