但其实，用户没必要长时间悬空手臂使用 Mac，只是在一些特定的场景，使用手指直接点击、拖动，真的会比触控板更方便直观，也更符合现代人的习惯。
Scroll Lock was reportedly specifically added for spreadsheets, and it solved a very specific problem: before mice and trackpads, and before fast graphic cards, moving through a spreadsheet was a nightmare. Just like Caps Lock flipped the meaning of letter keys, and Num Lock that of the numeric keypad keys, Scroll Lock attempted to fix scrolling by changing the nature of the arrow keys.
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Most powerful speech: Wolf Alice
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