diff --git a/LICENSE b/LICENSE
--- a/LICENSE
+++ b/LICENSE
@@ -1,4 +1,4 @@
-Copyright Okkey (c) 2018
+Copyright Taisuke Hikawa (c) 2018
 
 All rights reserved.
 
@@ -13,7 +13,7 @@
       disclaimer in the documentation and/or other materials provided
       with the distribution.
 
-    * Neither the name of Okkey nor the names of other
+    * Neither the name of Taisuke Hikawa nor the names of other
       contributors may be used to endorse or promote products derived
       from this software without specific prior written permission.
 
diff --git a/README.md b/README.md
--- a/README.md
+++ b/README.md
@@ -59,7 +59,3 @@
     ghci>lookupSeq (ID "1145141919893")
     Nothing
     ```
-
-## ToDo
-
--  Could use other functions of the searching system written in [here](https://oeis.org/hints.html).
diff --git a/oeis2.cabal b/oeis2.cabal
--- a/oeis2.cabal
+++ b/oeis2.cabal
@@ -1,30 +1,31 @@
--- This file has been generated from package.yaml by hpack version 0.28.2.
+cabal-version: 1.12
+
+-- This file has been generated from package.yaml by hpack version 0.31.1.
 --
 -- see: https://github.com/sol/hpack
 --
--- hash: dfea261a0cd8b7a597f5717df1093a6c7c1acf8250c469966c4c360b62652f15
+-- hash: a38920cd4910bd65d44f33dc4e93231bd7f1caa84141668368c05653a9d72af5
 
 name:           oeis2
-version:        0.1.0
+version:        1.0.0
 synopsis:       Interface for Online Encyclopedia of Integer Sequences (OEIS).
-description:    Please see the README on GitHub at <https://github.com/23_prime/oeis2#readme>
+description:    Please see the README on GitHub at <https://github.com/23prime/oeis2#readme>
 category:       Math
-homepage:       https://github.com/23_prime/oeis2#readme
-bug-reports:    https://github.com/23_prime/oeis2/issues
-author:         okkey
+homepage:       https://github.com/23prime/oeis2#readme
+bug-reports:    https://github.com/23prime/oeis2/issues
+author:         Taisuke Hikawa
 maintainer:     a23b23c23d23e@gmail.com
-copyright:      2018 okkey
+copyright:      2018 Taisuke Hikawa
 license:        BSD3
 license-file:   LICENSE
 build-type:     Simple
-cabal-version:  >= 1.10
 extra-source-files:
-    ChangeLog.md
     README.md
+    ChangeLog.md
 
 source-repository head
   type: git
-  location: https://github.com/23_prime/oeis2
+  location: https://github.com/23prime/oeis2
 
 library
   exposed-modules:
diff --git a/src/Math/OEIS.hs b/src/Math/OEIS.hs
--- a/src/Math/OEIS.hs
+++ b/src/Math/OEIS.hs
@@ -1,18 +1,17 @@
 {-# LANGUAGE OverloadedLists #-}
 
 module Math.OEIS (
+  -- * Functions
+  searchSeq,  searchSeq',
+  lookupSeq,  lookupSeq',
+  getSeqData, getSeqData',
+  extendSeq,  extendSeq',
+
   -- * Types
   SeqData,
   SearchStatus(..),
---  Language(..),
   Keyword(..),
-  OEISSeq(..),
-
-  -- * Functions
-  searchSeq',  searchSeq,
-  lookupSeq',  lookupSeq,
-  getSeqData', getSeqData,
-  extendSeq',  extendSeq
+  OEISSeq(..)
   ) where
 
 import           Data.List
@@ -42,6 +41,10 @@
 --
 -- > ghci>searchSeq (SubSeq [1,1,4,5,1,4,1,9,1,9,8,9,3]) 0
 -- > []
+searchSeq :: SearchStatus -> Int -> V.Vector OEISSeq
+searchSeq ss = unsafePerformIO . searchSeq' ss
+
+-- | searchSeq in IO
 searchSeq' :: SearchStatus -> Int -> IO (V.Vector OEISSeq)
 searchSeq' ss bound = do
   results' <- getResults ss 0 bound []
@@ -49,9 +52,6 @@
         | V.null results' = []
         | otherwise       = parseOEIS <$> results'
   return seqs
-
-searchSeq :: SearchStatus -> Int -> V.Vector OEISSeq
-searchSeq ss = unsafePerformIO . searchSeq' ss
 
 
 -- | Look up a sequence on OEIS.
diff --git a/src/Math/OEIS/Types.hs b/src/Math/OEIS/Types.hs
--- a/src/Math/OEIS/Types.hs
+++ b/src/Math/OEIS/Types.hs
@@ -5,15 +5,6 @@
 type SeqData = [Integer]
 type Texts = [T.Text]
 
--- Prefixes
-{-
-id:                     ref:                    program:
-seq:                    link:                   xref:
-signed:                 formula:                keyword:
-name:                   example:                author:
-offset:                 maple:                  extension:
-comment:                mathematica:
--}
 data SearchStatus = ID T.Text
                   | SubSeq SeqData
                   | Signed T.Text
@@ -21,7 +12,7 @@
                   | Comment T.Text
                   | Ref T.Text
                   | Link T.Text
-                  | Formla T.Text
+                  | Formula T.Text
                   | Example T.Text
                   | Maple T.Text
                   | Mathematica T.Text