ncurses-doc 6.0+20151024-2ubuntu1 (s390x binary) in ubuntu xenial

 The ncurses library routines are a terminal-independent method of
 updating character screens with reasonable optimization.
 .
 This package contains an introduction to writing programs with
 ncurses a guide to the internals of the ncurses library. It also
 includes the libraries' man pages.
 .
 Non-developers likely have little use for this package.