框架组件的行为正好类似于状态机：输入消息、输出消息和组件状态是模型的组成部分。
Framework components happen to behave like a state machine: input message, output message and component state are part of the model.
当在高级编辑模式下查看模型时，数据输入和输出是可见的；在基本模式下则只能看到控制流。
Data inputs and outputs are visible when the model is viewed in advanced editing mode; in basic mode only the control flow is visible.
选择输入逻辑模型和输出文件夹，如下面的屏幕快照所示。
Choose the input logical model and the output folder as shown in the screenshot.
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