全局错误处理：针对Flash运行时进行应用开发的开发者最希望加入的特性就是全局错误处理机制。
Global error handling: the most requested feature by those developing applications for the Flash runtime is a mechanism for global error handing.
除了其他事情外，它定义一个全局错误处理程序，在此将放置在执行主应用程序逻辑之前要运行的特定于平台的代码。
Among other things, it defines a global error handler, and it is where you would place any platform-specific code to run before executing main application logic.
应用推荐