Using RegexReplace()

Does this function support capturing groups, and if yes, how does one access the captured data? 

Intent is to use a this function looking for punctuation from a text field, and then add a new line to this. 

regex: ([.!?])\s*

substitution: $1\n

Documentation doesn't state one way or the other. I've tried escaping the new line value without success. Perhaps I'm just missing something simple.