点击对话框，展开插件树菜单。

Click inside the dialog box to expand the Extensions tree menu.

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在工作空间插件树中只选择模型到文本转换示例插件。

Only select the sample Model-To-Text transformation plug-in in the Workspace Plug-ins tree.

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图6显示这个插件中活动及其媒体文件的树视图。

Figure 6 shows a tree view of an activity and its media files in the plug-in.

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