The applet in this entry was created using Easy Java Simulations (EJS) by Francisco Esquembre (see http://www.um.es/fem/Ejs/). Parts of the simulations are based on the MultipleCoinToss and PartitionedBox EJS models by Wolfgang Christian and Mario Belloni. See http://www.compadre.org/osp for these and other EJS models. Thanks to Francisco Esquembre for his aid in the programming of the applet.