3 NT Opening and its anwers

The auction so far

3 nt	11-17 Solid 4 Major opening	4	Transfer to your suit relay with slam interrest
4	I have	4	Optional RKC for hearts (only answer your aces 4130 up the line) with a max
???

3 nt Printversion

No answers are found / defined. If the basic distribution is known you can ask for exact distribution with Symmetric relay principles. After that the next relay asks for Keycards and the relay after that for the exact controls in specific suit