默认通过快捷键“/” 键来显示或隐藏弹幕。也可通过更改代码中的”danmu“ 变量值来修改快捷键。 <br> 默认初始关闭弹幕，可通过更改”defaultClosing“变量为0，来默认初始开启弹幕.
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Change the description: Make it more readable.
