| UArray | Data.Array.Unboxed |
| URI |
| 1 (Type/Class) | Network.URI |
| 2 (Data Constructor) | Network.URI |
| URL | Text.Html |
| UnExpect | Text.ParserCombinators.Parsec.Error |
| UnQual | Language.Haskell.Syntax |
| UndefinedElement | Control.Exception, GHC.Exception, GHC.IOBase |
| Underflow | Control.Exception, GHC.Exception, GHC.IOBase |
| UndoBegin | System.Console.Readline |
| UndoCode | System.Console.Readline |
| UndoDelete | System.Console.Readline |
| UndoEnd | System.Console.Readline |
| UndoInsert | System.Console.Readline |
| Unique | Data.Unique |
| Unit |
| 1 (Type/Class) | GHC.Base |
| 2 (Data Constructor) | GHC.Base |
| UnixSocket | Network |
| Unlock | System.Posix, System.Posix.IO |
| Unpack | Graphics.Rendering.OpenGL, Graphics.Rendering.OpenGL.GL, Graphics.Rendering.OpenGL.GL.PixelRectangles, Graphics.UI.GLUT |
| UnpackCMYK | Graphics.Rendering.OpenGL, Graphics.Rendering.OpenGL.GL, Graphics.Rendering.OpenGL.GL.Hints, Graphics.UI.GLUT |
| Unsafe | Language.Haskell.THSyntax |
| UnsatisfiedConstraints | GHC.IOBase |
| UnsignedByte | Graphics.Rendering.OpenGL, Graphics.Rendering.OpenGL.GL, Graphics.Rendering.OpenGL.GL.VertexArrays, Graphics.UI.GLUT |
| UnsignedByte233Rev | Graphics.Rendering.OpenGL, Graphics.Rendering.OpenGL.GL, Graphics.Rendering.OpenGL.GL.VertexArrays, Graphics.UI.GLUT |
| UnsignedByte332 | Graphics.Rendering.OpenGL, Graphics.Rendering.OpenGL.GL, Graphics.Rendering.OpenGL.GL.VertexArrays, Graphics.UI.GLUT |
| UnsignedInt | Graphics.Rendering.OpenGL, Graphics.Rendering.OpenGL.GL, Graphics.Rendering.OpenGL.GL.VertexArrays, Graphics.UI.GLUT |
| UnsignedInt1010102 | Graphics.Rendering.OpenGL, Graphics.Rendering.OpenGL.GL, Graphics.Rendering.OpenGL.GL.VertexArrays, Graphics.UI.GLUT |
| UnsignedInt2101010Rev | Graphics.Rendering.OpenGL, Graphics.Rendering.OpenGL.GL, Graphics.Rendering.OpenGL.GL.VertexArrays, Graphics.UI.GLUT |
| UnsignedInt248 | Graphics.Rendering.OpenGL, Graphics.Rendering.OpenGL.GL, Graphics.Rendering.OpenGL.GL.VertexArrays, Graphics.UI.GLUT |
| UnsignedInt8888 | Graphics.Rendering.OpenGL, Graphics.Rendering.OpenGL.GL, Graphics.Rendering.OpenGL.GL.VertexArrays, Graphics.UI.GLUT |
| UnsignedInt8888Rev | Graphics.Rendering.OpenGL, Graphics.Rendering.OpenGL.GL, Graphics.Rendering.OpenGL.GL.VertexArrays, Graphics.UI.GLUT |
| UnsignedShort | Graphics.Rendering.OpenGL, Graphics.Rendering.OpenGL.GL, Graphics.Rendering.OpenGL.GL.VertexArrays, Graphics.UI.GLUT |
| UnsignedShort1555Rev | Graphics.Rendering.OpenGL, Graphics.Rendering.OpenGL.GL, Graphics.Rendering.OpenGL.GL.VertexArrays, Graphics.UI.GLUT |
| UnsignedShort4444 | Graphics.Rendering.OpenGL, Graphics.Rendering.OpenGL.GL, Graphics.Rendering.OpenGL.GL.VertexArrays, Graphics.UI.GLUT |
| UnsignedShort4444Rev | Graphics.Rendering.OpenGL, Graphics.Rendering.OpenGL.GL, Graphics.Rendering.OpenGL.GL.VertexArrays, Graphics.UI.GLUT |
| UnsignedShort5551 | Graphics.Rendering.OpenGL, Graphics.Rendering.OpenGL.GL, Graphics.Rendering.OpenGL.GL.VertexArrays, Graphics.UI.GLUT |
| UnsignedShort565 | Graphics.Rendering.OpenGL, Graphics.Rendering.OpenGL.GL, Graphics.Rendering.OpenGL.GL.VertexArrays, Graphics.UI.GLUT |
| UnsignedShort565Rev | Graphics.Rendering.OpenGL, Graphics.Rendering.OpenGL.GL, Graphics.Rendering.OpenGL.GL.VertexArrays, Graphics.UI.GLUT |
| UnsignedShort88 | Graphics.Rendering.OpenGL, Graphics.Rendering.OpenGL.GL, Graphics.Rendering.OpenGL.GL.VertexArrays, Graphics.UI.GLUT |
| UnsignedShort88Rev | Graphics.Rendering.OpenGL, Graphics.Rendering.OpenGL.GL, Graphics.Rendering.OpenGL.GL.VertexArrays, Graphics.UI.GLUT |
| UnsupportedOperation | GHC.IOBase |
| Up | Graphics.UI.GLUT, Graphics.UI.GLUT.Callbacks, Graphics.UI.GLUT.Callbacks.Window |
| UpDown | Graphics.UI.GLUT, Graphics.UI.GLUT.Window |
| UserEntry |
| 1 (Type/Class) | System.Posix, System.Posix.User |
| 2 (Data Constructor) | System.Posix, System.Posix.User |
| UserError | GHC.IOBase |
| UserID | System.Posix.Types, System.Posix |
| ulist | Text.Html |
| unEscapeString | Network.URI |
| unGeneric' | Data.Generics, Data.Generics.Aliases |
| unGetChan | Control.Concurrent, Control.Concurrent.Chan |
| unIO | GHC.IOBase |
| unProject | Graphics.Rendering.OpenGL, Graphics.Rendering.OpenGL.GLU, Graphics.Rendering.OpenGL.GLU.Matrix, Graphics.UI.GLUT |
| unProject4 | Graphics.Rendering.OpenGL, Graphics.Rendering.OpenGL.GLU, Graphics.Rendering.OpenGL.GLU.Matrix, Graphics.UI.GLUT |
| unQ | Language.Haskell.THSyntax |
| unbindCommandInMap | System.Console.Readline |
| unbindKey | System.Console.Readline |
| unbindKeyInMap | System.Console.Readline |
| unblock | Control.Exception, GHC.Exception |
| unblockSignals | System.Posix.Signals, System.Posix |
| uncurry | Data.Tuple, Prelude |
| undefined | GHC.Base, GHC.Err, Prelude |
| underline | Text.Html |
| undl | System.Posix.DynamicLinker |
| unexpected | Text.ParserCombinators.Parsec, Text.ParserCombinators.Parsec.Prim |
| unfoldr | Data.List, List |
| union |
| 1 (Function) | Data.List, List |
| 2 (Function) | Data.Set |
| unionBy | Data.List, List |
| unionFileModes | System.Posix, System.Posix.Files |
| unionManySets | Data.Set |
| unitFM | Data.FiniteMap |
| unitSet | Data.Set |
| unit_con | Language.Haskell.Syntax |
| unit_con_name | Language.Haskell.Syntax |
| unit_tycon | Language.Haskell.Syntax |
| unit_tycon_name | Language.Haskell.Syntax |
| unless | Control.Monad, Control.Monad.Cont, Control.Monad.Error, Control.Monad.Identity, Control.Monad.List, Control.Monad.RWS, Control.Monad.Reader, Control.Monad.State, Control.Monad.Writer, Monad |
| unlines | Data.List, Prelude, List |
| unlinesPS | Data.PackedString |
| unlockFile | GHC.Handle |
| unmarshalObject | GHC.Dotnet |
| unmarshalPixelInternalFormat | Graphics.Rendering.OpenGL, Graphics.Rendering.OpenGL.GL, Graphics.Rendering.OpenGL.GL.Texturing, Graphics.UI.GLUT |
| unmarshalString | GHC.Dotnet |
| unordList | Text.Html |
| unpackAppendCString# | GHC.Base, GHC.Pack |
| unpackCString | GHC.Pack |
| unpackCString# | GHC.Base, GHC.Pack |
| unpackCStringUtf8# | GHC.Base |
| unpackFamily | Network.Socket |
| unpackFoldrCString# | GHC.Base, GHC.Pack |
| unpackNBytes# | GHC.Base, GHC.Pack |
| unpackPS | Data.PackedString |
| unreserved | Network.URI |
| unsafeAccum | GHC.Arr |
| unsafeAccumArray | GHC.Arr |
| unsafeArray | GHC.Arr |
| unsafeAt | GHC.Arr |
| unsafeChr | GHC.Base |
| unsafeForeignPtrToPtr | Foreign, Foreign.ForeignPtr, GHC.ForeignPtr, ForeignPtr |
| unsafeFreeze | Data.Array.IO, Data.Array.MArray, Data.Array.ST, Data.Array.Storable |
| unsafeFreezeSTArray | GHC.Arr |
| unsafeIOToST |
| 1 (Function) | Control.Monad.ST, Control.Monad.ST.Strict |
| 2 (Function) | Control.Monad.ST.Lazy |
| unsafeIndex | GHC.Arr |
| unsafeInterleaveIO | GHC.IOBase, System.IO.Unsafe |
| unsafeInterleaveST |
| 1 (Function) | Control.Monad.ST.Lazy |
| 2 (Function) | Control.Monad.ST, Control.Monad.ST.Strict, GHC.ST |
| unsafePerformIO | Foreign, GHC.IOBase, System.IO.Unsafe |
| unsafePreservingMatrix | Graphics.Rendering.OpenGL, Graphics.Rendering.OpenGL.GL, Graphics.Rendering.OpenGL.GL.CoordTrans, Graphics.UI.GLUT |
| unsafeRangeSize | GHC.Arr |
| unsafeReadIOArray | GHC.IOBase |
| unsafeReadSTArray | GHC.Arr |
| unsafeRenderPrimitive | Graphics.Rendering.OpenGL, Graphics.Rendering.OpenGL.GL, Graphics.Rendering.OpenGL.GL.BeginEnd, Graphics.UI.GLUT |
| unsafeReplace | GHC.Arr |
| unsafeThaw | Data.Array.IO, Data.Array.MArray, Data.Array.ST, Data.Array.Storable |
| unsafeThawSTArray | GHC.Arr |
| unsafeWriteIOArray | GHC.IOBase |
| unsafeWriteSTArray | GHC.Arr |
| unsetEnv | System.Posix, System.Posix.Env |
| until | GHC.Base, Prelude |
| unwords | Data.List, Prelude, List |
| unwordsPS | Data.PackedString |
| unzip | Data.List, GHC.List, Prelude, List |
| unzip3 | Data.List, GHC.List, Prelude, List |
| unzip4 | Data.List, List |
| unzip5 | Data.List, List |
| unzip6 | Data.List, List |
| unzip7 | Data.List, List |
| updatePosChar | Text.ParserCombinators.Parsec.Pos |
| updatePosString | Text.ParserCombinators.Parsec.Pos |
| updateState | Text.ParserCombinators.Parsec, Text.ParserCombinators.Parsec.Prim |
| upper | Text.ParserCombinators.Parsec, Text.ParserCombinators.Parsec.Char |
| urgentDataAvailable | System.Posix.Signals, System.Posix |
| usageInfo | System.Console.GetOpt |
| usemap | Text.Html |
| userDefinedSignal1 | System.Posix.Signals, System.Posix |
| userDefinedSignal2 | System.Posix.Signals, System.Posix |
| userError | GHC.IOBase, Prelude, System.IO, System.IO.Error, IO |
| userErrorType | System.IO.Error, MarshalError |
| userErrors | Control.Exception |
| userGroupID | System.Posix, System.Posix.User |
| userID | System.Posix, System.Posix.User |
| userName | System.Posix, System.Posix.User |
| userShell | System.Posix, System.Posix.User |
| userTime | System.Posix, System.Posix.Process |
| usernameCompletionFunction | System.Console.Readline |
| usleep | System.Posix, System.Posix.Unistd |
