PenfoldBookChapter3 [view]
      PenfoldBookChapter2 [view]
           PenfoldBookChapter1 [view]
           PenfoldBookChapter2/Vco [view]
           PenfoldBookChapter2/KeyBoard [view]
           PenfoldBookChapter2/Vca [view]
           PenfoldBookChapter2/Eg [view]
           PenfoldBookChapter2/Vcf [view]
           PenfoldBookChapter2/Psu [view]
           PenfoldBookChapter2/Mixer [view]
           PenfoldBookChapter2/NoiseGen [view]
           PenfoldBookChapter2/Lfo [view]
      PenfoldBookChapter4 [view]
           PenfoldBook [view]