For example if a party was to come and sell a lot of EMU in one shot at a sub market price, where the result of selling that volume would sink the price below a system wide agreed lower threshold, then the system itself would buy that EMU with assets it holds (if it has enough) at the threshold level.
This dominant market maker model of price stabilisation is similar to how nuBits works - the trick is to have more money available than anyone else in the market at all times in order to manipulate the price. However, although eMunie's MM will have more of its native token available than anyone else, where will it get the liquidity for the other side of the market from?
For that matter, where are these trades taking place?
Currency trades will be performed within the integrated DEX (3rd party exchanges are supported also, but have no impact on the economics), with tokens representing other world currencies. These tokens are pegged to the respective currency and can be converted to actual fiat currency via a network of on/off ramps through another system component called TRAID.
Initially the buffer will hold only EMU, users will "buy in" with USD tokens, that they can then trade on the DEX for EMU. This is the basic mechanism with which the buffers obtain other asset types.
These tokens can also be used to buy goods/services if the merchant wishes to accept them. World currency tokens can not be traded freely in the DEX, 1 USD token is worth 1 real USD.