How to show Quick Help for the methods which we wrote …?
Like for inbuilt function when we right click on it & Click Quick Help then we get all info about that method like that I want to do for user defined methods so that any one come to know that method takes which parameter and each parameter for which purpose?
For more explanation, see these two images:


Here is a solution for that. Also check apple documentation. You might have to create document set and install it in Xcode.
Edit: Here is another similar post, How do you populate the Xcode 4 "Option+Click" popover?