如果做出前述代码更改，则会看到空白屏幕。
If you made the code changes described earlier, you see a blank screen.
有时开机几分钟后系统会突然白屏，过一会儿又恢复了界面。
A few minutes later, the screen goes blank and then comes back up.
一旦得到了空白屏幕，也就准备好实际输出 VXML 文件了。
Once you get a blank screen, you're ready to actually output the VXML file.
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