V2EX = way to explore
V2EX 是一个关于分享和探索的地方
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This topic created in 5184 days ago, the information mentioned may be changed or developed.
SL 里是空格，Lion里没了？总要为了对话框去摸trackpad，不方便。
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changx OP 自问自答了。
System Preferences -> Keyboard -> Keyboard Shortcuts -> Full Keyboard Access 选中 All controlls . |
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