The red X error icon is decorated with a question mark to show that help is available for a particular error.
带问号的红色 X 错误图标表示这个错误有相关的帮助。
If you want extra debugging help, you can choose to Show Warnings in the Error List window by clicking in the appropriate box.
如果你想获得更多的调试帮助，你可以选择错误列表窗口中的显示警告选项。
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