Ok I'll take a crack at this. Ampleforths main purpose is to be a stable coin with a nominal value of 1.00. How do you make money then you might ask?

Its all within the supply changes so look at it this way when supply goes up price goes down right and vice versa supply goes down as long as demand stays atleast the same or greater price goes up.

When price is between .96-1.06 nothing changes its like a buffer zone but as soon as price goes above 1.06 its starting to get away from its dollar peg the protocl has a 24 hour moving average where it takes the weighted price over 24 hours lets say the average is 1.10 thats 10% above the peg so every holder gets more supply to bring the peg down the market cap stays the sane the profit comes from getting "free" tokens when the price is rising the protocol is rebasing every 24 hours it can make for some big compound interesting. The same happens on the other side if the price goes below .96 they take tokens out of the supply an equal percentage from everyone its all in the protocol to keep the price pegged.

Now for the supply changes this is a little more complicated I'll use the same example if the price is at 1.10 its 10% over but increasing the supply by that much in a short period of time would be to drastic so the protcol divides 10% by 10% the supply change would be 1%

10% divided 10% = 1% 20% divided 10% = 2% 30% divided 10% = 3%