Activate the "Open test page" button, which opens the example to test in a new window and runs a script that set focus on a link after the checkbox
With focus on the 'Navigate backwards from here' link, navigate to the 'All condiments' checkbox. Do this with each of the following commands or command sequences.
Ctrl+Option+Left, then Ctrl+Option+Left, then Ctrl+Option+Left
Shift+Tab
Shift+Control+Option+Command+J
Record Results
Navigate backwards to a mixed checkbox
After 'Ctrl+Option+Left, then Ctrl+Option+Left, then Ctrl+Option+Left'