@User You nerd sniped me - https://docs.google.com/spreadsheets/d/1BTvnNFhkFqT4uqZs7uIK6D6QAJ4tRYkpU44OZFgme9Q/edit?ts=5f99f0a3#gid=1572495657

Can you expand "Full Adder (Sum/Carry)" on the Description tab?

Yeah. Full Adder (sum) is just tracking the path from input to the sum output. Full adder (carry) is just tracking the path from input to carry output.

I meant, write down the expansion there. It's not present until four sheets in or so

Yup. Will do so.