• H ... Go to Home page.
• C ... Go to Counter page.
• F ... Go to Fetch data page.
• Ctrl ... Double tap to go to Home.
• @ ... (only "Home") change greeting message. (for testing AddByKey())
• U ... (only "Counter") Increment counter.

The hot key H will work even if input element has focus.

* Input element for the hot key H:

The hot key C will work when a non-text input element, like a checkbox or radio, has focus.

* Input element for the hot key C: