ASCII设备控制字符最初是用于控制硬件设备的，如：打印机、录音设备。这个字符不属于HTML文档。
ASCII device control characters were originally designed to control hardware devices like printers and tape drives. These characters have nothing to do inside any HTML document.
ASCII设备控制字符最初是用于控制硬件设备的，如：打印机、录音设备。这个字符不属于HTML文档。
ASCII device control characters were originally designed to control hardware devices like printers and tape drives. These characters have nothing to do inside any HTML document.
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