计算机程序设计中,空白字元是指一个代表空位的字元。人们在键盘上按下spacebar后就会产生空白字元。在键盘上按下Tab ↹键后输入的则是水平的空白字元,不过两者之间输入的空格的长度可能会有所不同。人们按下↵ Enter后输入的则是垂直的空白字元[1]

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