Safari Web Inspector-esque functionality in Xcode?

Just starting out in Objective-C, so I'm curious as to how some apps that I enjoy function interface-wise. I've cloned a few apps from Github into Xcode, and I'm looking fo开发者_如何学Pythonr something similar to Safari's Web Inspector where I can highlight portions of the application and see what piece of code they refer to?

I think it may have something to do with Interface Builder, but I'm not sure where to begin... help?

Thanks!

This doesn't exist AFAIK. Interface Builder doesn't show a representation of your code, it allows to you to lay out (serialized) interface elements to your app graphically.