diff --git a/CHANGELOG.md b/CHANGELOG.md
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+++ b/CHANGELOG.md
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+# Revision history for lists-flines
+
+## 0.1.0.0 -- 2020-10-05
+
+* First version. Released on an unsuspecting world.
diff --git a/Data/Lists/FLines.hs b/Data/Lists/FLines.hs
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+++ b/Data/Lists/FLines.hs
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+-- |
+-- Module      :  Data.Lists.FLines
+-- Copyright   :  (c) OleksandrZhabenko 2020
+-- License     :  MIT
+-- Stability   :  Experimental
+-- Maintainer  :  olexandr543@yahoo.com
+--
+-- Additional data and structures to some 'String'-related lists.
+--
+
+{-# LANGUAGE CPP, FlexibleInstances, MultiParamTypeClasses #-}
+
+module Data.Lists.FLines where
+
+#ifdef __GLASGOW_HASKELL__
+#if __GLASGOW_HASKELL__>=710
+/* code that applies only to GHC 7.10.* and higher versions */
+import GHC.Base (mconcat)
+#endif
+#endif
+#ifdef __GLASGOW_HASKELL__
+#if __GLASGOW_HASKELL__==708
+/* code that applies only to GHC 7.8.* */
+mconcat = concat
+#endif
+#endif
+import System.IO
+
+-- | Auxiliary printing function to define the line ending needed to be shown and printed. Is primarily defined in the @uniqueness-periods-vector-general@ package (https://hackage.haskell.org/package/uniqueness-periods-vector-general).
+newLineEnding :: String
+newLineEnding
+  | nativeNewline == LF = "\n"
+  | otherwise = "\r\n"
+
+data FLines a = F1 a | FL [a] deriving Eq
+
+type Flines = FLines String
+
+-- | Is intended to be printed and so adds the new line ending.
+instance Show (FLines String) where
+  show (F1 xs) = mconcat [xs, newLineEnding]
+  show (FL (xs:xss)) = mconcat (xs:newLineEnding:[show (FL xss)])
+  show _ = newLineEnding
+
+class GetN a b where
+  getN :: Int -> a -> Maybe b
+
+instance GetN (FLines String) String where
+  getN n (F1 xs)
+    | null xs = Nothing
+    | n == 1 = Just xs
+    | otherwise = Nothing
+  getN n (FL (xs:xss))
+   | n == 1 = if null xs then Nothing else Just xs
+   | compare n 1 == LT = Nothing
+   | otherwise = getN (n - 1) (FL xss)
+  getN _ _ = Nothing
+
+class GetNTrans a b where
+  getNT :: Int -> (b -> b) -> a -> Maybe b
+
+instance GetNTrans (FLines String) String where
+  getNT n g (F1 xs)
+    | null (g xs) = Nothing
+    | n == 1  = Just (g xs)
+    | otherwise = Nothing
+  getNT n g (FL (xs:xss))
+   | n == 1 = if null (g xs) then Nothing else Just (g xs)
+   | compare n 1 == LT = Nothing
+   | otherwise = getNT (n - 1) g (FL xss)
+  getNT _ _ _ = Nothing
diff --git a/LICENSE b/LICENSE
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+++ b/LICENSE
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+Copyright (c) 2020 OleksandrZhabenko
+
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be included
+in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
diff --git a/Setup.hs b/Setup.hs
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+++ b/Setup.hs
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+import Distribution.Simple
+main = defaultMain
diff --git a/lists-flines.cabal b/lists-flines.cabal
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+++ b/lists-flines.cabal
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+-- Initial lists-flines.cabal generated by cabal init.  For further
+-- documentation, see http://haskell.org/cabal/users-guide/
+
+name:                lists-flines
+version:             0.1.0.0
+synopsis:            Additional data and structures to some 'String'-related lists.
+description:         Is primarily used to transform some Strings read from a file.
+homepage:            https://hackage.haskell.org/package/lists-flines
+license:             MIT
+license-file:        LICENSE
+author:              OleksandrZhabenko
+maintainer:          olexandr543@yahoo.com
+copyright:           Oleksandr Zhabenko
+category:            Data
+build-type:          Simple
+extra-source-files:  CHANGELOG.md
+cabal-version:       >=1.10
+
+library
+  exposed-modules:     Data.Lists.FLines
+  -- other-modules:
+  other-extensions:    CPP, FlexibleInstances, MultiParamTypeClasses
+  build-depends:       base >=4.7 && <4.15
+  -- hs-source-dirs:
+  default-language:    Haskell2010