Tokens Explanation
There are four tokens in the Fatfi protocol:

FAT - Our Governance token

FAC - Fatfi Cash

Fatfi Cash tokens are designed to be used as a medium of exchange. The built-in stability mechanism expands and contracts their supply, maintaining the price of 1$.

FAB - Fatfi Bonds

Fatfi Bonds are minted and redeemed to incentivize changes in the Fatfi Cash supply. Bonds are always on sale to Fatfi Cash holders, although purchases are expected to be made at a price below 1 Fatfi Cash. At any given time, holders are able to exchange their bonds to Fatfi Cash tokens in the Fatfi Cash Treasury. Upon redemption, they are able to convert 1 Fatfi Bond to 1 Fatfi Cash, earning them a premium on their previous bond purchases.
Bonds in Fatfi Cash do not have expiration dates. All holders are able to convert their bonds to Fatfi Cash tokens, as long as the Treasury has a positive FAC balance.

FAS - Fatfi Shares

Fatfi Shares loosely represent the value of the Fatfi Cash network. Increased demand for Fatfi Cash results in new Fatfi Cash tokens to be minted and distributed to Fatfi Shareholders, provided that the Treasury is sufficiently full.
Holders of Fatfi Share tokens can claim a pro-rata share of Fatfi Cash tokens accumulated to the Boardroom contract.