MD and RST Buttons
The function of the MD button is described in Setup (MD) Button (line).
Pressing the reset button causes a hardware reset.
Both buttons face right on Tibbo Project PCBs (TPPs). For assembly inside a Tibbo Project Box (TPB), a TPP must be outfitted with an MD/RST button PCB. This is a small PCB with two buttons facing upward. When plugged into the TPP, these buttons work parallel with the TPP's side-facing buttons.
The MD/RTS PCB is necessary only when installing a TPP into a TPB. Hence, the MD/RST PCB is supplied as a part of TPB kits, not with TPPs.