筆記幾篇重要的文章

介紹selector與target-action機制的文章
http://developer.apple.com/library/ios/#DOCUMENTATION/Cocoa/Conceptual/ObjectiveC/Chapters/ocSelectors.html

關於key-binding的
http://developer.apple.com/library/mac/#documentation/cocoa/Conceptual/TextEditing/Concepts/KeyBindings.html#//apple_ref/doc/uid/TP40008900-BAJCDFFI
http://developer.apple.com/library/mac/#documentation/Cocoa/Conceptual/EventOverview/TextDefaultsBindings/TextDefaultsBindings.html
http://www.hcs.harvard.edu/~jrus/site/cocoa-text.html
http://www.hcs.harvard.edu/~jrus/Site/System%20Bindings.html