打印机控制字符 [计] printer control character
打印机控制字符 打印控制字符
Printer control characters Print control characters
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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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