> You mean String#center.

True. #align_center is a Nano method. It differs from the built-in
#center in that it will center each line of a string (or any split for
that matter), not just the whole string as a single unit.

BTW, I thought it would be better if #center embraced this
functionality too, so I put in an RCR for it, but haven't yet heard if
it will be accepted.

  http://www.rcrchive.net/rcr/show/313

T.