Ask questions. . Is mentally retarded, do not laugh. .

Developed under the program to ask mac osx 10.6 mac osx 10.5 in normal use it? Some libraries will not be a problem?
Customer support 10.5,10.6,10.7. Pre-planning is writing project analysis.
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10.5 The following procedures developed should be able to run at 10.6,10.7 below, Oh
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Backward compatible
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Choose to use when developing the SDK can be 10.5
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Screw ........
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This constraint entry depends on the library's use. With no relationship with the SDK.
apple library does not backward compatible with traditional , it's not MS more than Oracle ⋯ ⋯