The harmony browser shows the 4-tuned jazz harmonies of the three scales types major, harmonic and melodic minor. First of all, you can click on chords and listen how they sound (eg examples from a song book or a book about harmony theory). The selected chord is placed into the pianowin copy buffer and can be pasted into your song with the middle (shift+left if configured for 2 button mouse) button in the pianowin.