Stable Seekers or Users: they can swap collateral against stable assets and conversely swap stable assets against a whitelisted collateral of their choice at oracle value and with no slippage. They pay small transaction fees when they mint and/or burn. Let's say that the price of wETH is 1000€, and the transaction fees 0.3%, then it is possible to swap 1 wETH for 997 EUR stablecoins. Conversely, with 1000 EUR stablecoins, if transaction fees are 0.3%, it is possible to get 0.997 wETH.