The following applet loads the entire MASON toolkit so it may take a second. Please note:

• There are known problems with some Mac web browsers, as their Java may not be hardware-accelerated and the 2D graphics is very slow. You'll have more luck running MASON directly as a Java 1.3.1 application. See the main web page for more information.
• Mac web browsers except for Safari operate best when the Java 1.4.2 plugin is running.
• Once a simulation is running, you can start another simulation under the File menu.
• If you close a display, it is hidden -- you can get it back under the Displays tab in the console window. If you close the the console window, the simulation is quit.