Extra clue: It has INTENSE, TONE and VOLUME.
LOL: What is this pedal? Pretty obvious by now right?
5V1 is a ZENER DIODE for MOSFET protection.
The diode next to 9V is a double blade sword...polarity protection and a bit voltage sag.
The E-Caps below 2M2 is 47uF, the value get hide a bit on the layout.
Square pad for LED denoted Anode pin.
Extra slot allocated for bigger 104 mylar cap.