Activate the "Open test page" button, which opens the example to test in a new window.
In the window that displays the example to test, activate the "Run Setup" button, which sets focus on the first disclosure button
With focus on the 'About' disclosure button, read information about the disclosure button. Do this with each of the following commands or command sequences.
Control+Option+F3
Control+Option+F4
Record Results
Request information about a collapsed disclosure button