Enables background tasks that interact with the user interface, communicating via events raised on the user-interface thread.

启用与使用者介面互动的背景工作，透过使用者介面执行绪上引发的事件来沟通。

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This is because remote invocations in JSR 172 are blocking calls, and if invoked in the main event thread, the user interface will freeze until the remote invocation completes.

由于JSR 172中的远程调用是按模块进行的，而且如果在主事件线程中调用，用户界面会冻结，直到远程调用结束。

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When a pluglet is executed, it runs on the Rational Software Architect (User Interface) UI thread.

当运行 pluglet 时，它在 Rational Software Architect（用户界面）UI 线程上运行。

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