The simulation allows students and instructors to change the production of two goods along a linear production possibility curve. The simulation shows a diagram as well as original and changed production levels. Users can change opportunity cost as well as the level of production.
The simulation does not allow to simulate imports/exports. To find simulations that consider production and trade simultaneously such as the Ricardo and the Heckscher-Ohlin model go to http://www.calcat.de and search for International.