What Xcode "Build Rules" does? -

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I'm new to Xcode, with the "target" in Xcode, I could see that there is a tab called "Build Rule".

I wonder what this tab is?

Thanks

Personally I am also quite new to Xcode and I do not even know about building rules. I got information that helps me understand it better, maybe it's a help for you. If anyone with more experience with Xcode has a better answer, please correct me, because I'm still learning Xcode.


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