How to view IOS documentation using Xcode?

Question

Is there a shortcut i can use to display or search Obj-C API?

Say, i'd like to learn more about what IBAction does, i wonder if i can mouse over it and view documentation. Is there a way this can be enabled? A side bar possibly?

Please advise

Answer 1

Option-click a class name and a window will pop up with a description. Click the book icon and the help window will open to that class. Command click to view the h file.

Answer 2

Not that I know off, but you may see the source code at any time, and that has plenty of documentation on the comments.