Binary package “libghc-focuslist-doc” in ubuntu eoan

lists with a focused element; documentation

 A FocusList is a sequence of elements which has one element as its
 Focus. It supports quick insertion and indexing by its implementation
 with Seq.
 .
 This package provides the documentation for a library for the Haskell
 programming language.
 See http://www.haskell.org/ for more information on Haskell.