confusion of how to make osx app backward compatible & how to test them

Question

after reading the apple SDK guide https://developer.apple.com/library/mac/#documentation/developertools/conceptual/cross_development/Overview/overview.html

I\'m still c

Answer 1

You need to do these settings :

1.Set the Base SDK to Current version of Mac (ex. 10.7)

2.Set the Deployment SDK to older version (ex.1.4)