Pick the note while lightly touching the string directly over the fret indicated. A chiming harmonic results.
Fret the note as shown, then lightly place your index finger directly over ‘x’ fret (AH‘X’) and pick (with a pick, p or a).
After fretting the note in the triangle, dig into the string with the side of your thumb as you sound it with the pick.
Place your finger on the note as shown, but sound it with a quick pick hand tap at the fret shown (TH17) for a harmonic.
A previously sounded note is touched above the fret marked TCH (eg, TCH 9) for it to sound a harmonic.