Mac OS X Tips
Enabling 'point-to-focus' in Mac OS X Aqua
Problem:
Want to make window active when mouse hovers over it (without having to click on the window).
Solution:
In an xterm do
defaults write com.apple.x11 wm_ffm true
Then restart X11. To undo:
defaults write com.apple.x11 delete wm_ffm
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