The download contains three files:
Protect Content.html lets you generate your own protected content.
Demo.html is a protected document, and as long as it remains unbroken, it's your proof that this software works. You can also use it as a template for your own protected pages.
Demo, with hint.html is another protected document that tells you the password. This is meant to show that the first demo is not a trick or a fake.
Enjoy! Feel free to reply with questions or comments.