按照传统主机应用程序的性质，将屏幕标签左移或右移几个字符，并不会被看作是重大的变化。
The nature of traditional host applications is such that shifting a screen label left or right a few characters might not be considered significant.
键将光标向左移一格，同时删除它移过的任何字符。
Backspace "Backspace" moves the cursor one space to the left, at the same time erasing any character it moves over.
键将光标向左移一格，同时删除它移过的任何字符。
Backspace "Backspace" moves the cursor one space to the left, at the same time erasing any character it moves over.
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