Login box
User logins
In the above form you can enter the username "test" and password "test" and you will see how user logins work in TYPO3. This text will disappear when the login happens because it is set to be hidden when a login is active. Another element will appear instead - shown exclusively because of the login.
Protected content?
This content element is visible only because you are logged in as a frontend user. You can also protect individual pages - click here to visit an example of that!