Child windows containing documents should always be maximized inside the application unless the user explicitly instructs otherwise, or the user needs to simultaneously work in several documents to accomplish a specific task.

• 程序内部包含文档的子窗口应该始终最大化；除非用户有明显的其他要求，或者用户为了完成某项任务，需要同时在几个文档上进行工作。