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diff --git a/src/GF/Conversion/SimpleToMCFG/Nondet.hs b/src/GF/Conversion/SimpleToMCFG/Nondet.hs
deleted file mode 100644
index d6ff052f5..000000000
--- a/src/GF/Conversion/SimpleToMCFG/Nondet.hs
+++ /dev/null
@@ -1,256 +0,0 @@
-----------------------------------------------------------------------
--- |
--- Maintainer  : PL
--- Stability   : (stable)
--- Portability : (portable)
---
--- > CVS $Date: 2005/08/17 08:27:29 $ 
--- > CVS $Author: peb $
--- > CVS $Revision: 1.7 $
---
--- Converting SimpleGFC grammars to MCFG grammars, nondeterministically.
--- Afterwards, the grammar has to be extended with coercion functions,
--- from the module 'GF.Conversion.SimpleToMCFG.Coercions'
---
--- the resulting grammars might be /very large/
---
--- the conversion is only equivalent if the GFC grammar has a context-free backbone.
------------------------------------------------------------------------------
-
-
-module GF.Conversion.SimpleToMCFG.Nondet
-    (convertGrammar) where
-
-import GF.System.Tracing
-import GF.Infra.Print
-
-import Control.Monad
-
-import GF.Formalism.Utilities
-import GF.Formalism.GCFG 
-import GF.Formalism.MCFG 
-import GF.Formalism.SimpleGFC 
-import GF.Conversion.Types
-
-import GF.Data.BacktrackM
-import GF.Data.Utilities (notLongerThan, updateNthM)
-
-------------------------------------------------------------
--- type declarations
-
-type CnvMonad a = BacktrackM Env a
-
-type Env    = (ECat, [ECat], LinRec, [SLinType]) -- variable bindings: [(Var, STerm)]
-type LinRec = [Lin SCat MLabel Token]
-
-
-----------------------------------------------------------------------
--- main conversion function
-
-maxNrRules :: Int
-maxNrRules = 5000
-
-convertGrammar :: SGrammar -> EGrammar 
-convertGrammar rules = traceCalcFirst rules' $
-		       tracePrt "SimpleToMCFG.Nondet - MCFG rules" (prt . length) $
-		       rules'
-    where rules' = rules >>= convertRule
---		       solutions conversion undefined
---    where conversion = member rules >>= convertRule
-
-convertRule :: SRule -> [ERule] -- CnvMonad ERule
-convertRule (Rule (Abs decl decls fun) (Cnc ctype ctypes (Just term))) =
---    | prt(name2fun fun) `elem` 
---      words "UseCl PosTP TPast ASimul SPredV IndefOneNP DefOneNP UseN2 mother_N2 jump_V" =
-    if notLongerThan maxNrRules rules 
-       then tracePrt ("SimpeToMCFG.Nondet - MCFG rules for " ++ prt fun) (prt . length) $
-	    rules
-       else trace2 "SimpeToMCFG.Nondet - TOO MANY RULES, function not converted" 
-		("More than " ++ show maxNrRules ++ " MCFG rules for " ++ prt fun) $
-            []
-    where rules = flip solutions undefined $
-		  do let cat : args = map decl2cat (decl : decls)
-		     writeState (initialECat cat, map initialECat args, [], ctypes)
-		     rterm <- simplifyTerm term
-		     reduceTerm ctype emptyPath rterm
-		     (newCat, newArgs, linRec, _) <- readState
-		     let newLinRec = map (instantiateArgs newArgs) linRec
-			 catPaths : argsPaths = map (lintype2paths emptyPath) (ctype : ctypes)
-		     -- checkLinRec argsPaths catPaths newLinRec
-		     return $ Rule (Abs newCat newArgs fun) (Cnc catPaths argsPaths newLinRec) 
-convertRule _ = [] -- failure
-
-
-----------------------------------------------------------------------
--- "type-checking" the resulting linearization
--- should not be necessary, if the algorithms (type-checking and conversion) are correct
-
-checkLinRec args lbls = mapM (checkLin args lbls) 
-
-checkLin args lbls (Lin lbl lin) 
-    | lbl `elem` lbls = mapM (symbol (checkArg args) (const (return ()))) lin
-    | otherwise = trace2 "SimpleToMCFG.Nondet - ERROR" "Label mismatch" $
-		  failure
-
-checkArg args (_cat, lbl, nr) 
-    | lbl `elem` (args !! nr) = return ()
---    | otherwise = trace2 "SimpleToMCFG.Nondet - ERROR" ("Label mismatch in arg " ++ prt nr) $
---		  failure
-    | otherwise = trace2 ("SimpleToMCFG.Nondet - ERROR: Label mismatch in arg " ++ prt nr) 
-		  (prt lbl ++ " `notElem` " ++ prt (args!!nr)) $
-		  failure
-
-
-----------------------------------------------------------------------
--- term simplification
-
-simplifyTerm :: STerm -> CnvMonad STerm
-simplifyTerm (term :! sel)      
-    = do sterm <- simplifyTerm term
-	 ssel <- simplifyTerm sel
-	 case sterm of
-	   Tbl table  -> do (pat, val) <- member table
-			    pat =?= ssel
-			    return val
-	   _ -> do sel' <- expandTerm ssel
-		   return (sterm +! sel')
--- simplifyTerm (Var x)           = readBinding x
-simplifyTerm (con :^ terms)    = liftM (con :^) $ mapM simplifyTerm terms
-simplifyTerm (Rec record)      = liftM Rec      $ mapM simplifyAssign record
-simplifyTerm (term :. lbl)     = liftM (+. lbl) $      simplifyTerm term
-simplifyTerm (Tbl table)       = liftM Tbl      $ mapM simplifyCase table
-simplifyTerm (Variants terms)  = liftM Variants $ mapM simplifyTerm terms
-simplifyTerm (term1 :++ term2) = liftM2 (:++) (simplifyTerm term1) (simplifyTerm term2)
-simplifyTerm term              = return term
-
-simplifyAssign :: (Label, STerm) -> CnvMonad (Label, STerm)
-simplifyAssign (lbl, term) = liftM ((,) lbl) $ simplifyTerm term
-
-simplifyCase :: (STerm, STerm) -> CnvMonad (STerm, STerm)
-simplifyCase (pat, term) = liftM2 (,) (simplifyTerm pat) (simplifyTerm term)
-
-
-------------------------------------------------------------
--- reducing simplified terms, collecting MCF rules
-
-reduceTerm :: SLinType -> SPath -> STerm -> CnvMonad ()
---reduceTerm ctype path (Variants terms) 
---    = member terms >>= reduceTerm ctype path
-reduceTerm (StrT)   path term = updateLin (path, term)
-reduceTerm (ConT _) path term = do pat <- expandTerm term
-				   updateHead (path, pat)
-reduceTerm (RecT rtype) path term
-    = sequence_ [ reduceTerm ctype (path ++. lbl) (term  +. lbl) | (lbl, ctype) <- rtype ]
-reduceTerm (TblT pats vtype) path table 
-    = sequence_ [ reduceTerm vtype (path ++! pat) (table +! pat) | pat <- pats ]
-
-
-------------------------------------------------------------
--- expanding a term to ground terms
-
-expandTerm :: STerm -> CnvMonad STerm
-expandTerm arg@(Arg nr _ path) 
-    = do ctypes <- readArgCTypes
-	 unifyPType arg $ lintypeFollowPath path $ ctypes !! nr
--- expandTerm arg@(Arg nr _ path) 
---     = do ctypes <- readArgCTypes
--- 	 pat <- member $ enumeratePatterns $ lintypeFollowPath path $ ctypes !! nr
--- 	 pat =?= arg
--- 	 return pat
-expandTerm (con :^ terms)   = liftM (con :^) $ mapM expandTerm terms
-expandTerm (Rec record)     = liftM  Rec     $ mapM expandAssign record
---expandTerm (Variants terms) = liftM Variants $ mapM expandTerm terms  
-expandTerm (Variants terms) = member terms >>= expandTerm  
-expandTerm term = error $ "expandTerm: " ++ prt term
-
-expandAssign :: (Label, STerm) -> CnvMonad (Label, STerm)
-expandAssign (lbl, term) = liftM ((,) lbl) $ expandTerm term
-
-unifyPType :: STerm -> SLinType -> CnvMonad STerm
-unifyPType arg (RecT prec) = 
-    liftM Rec $
-    sequence [ liftM ((,) lbl) $
-	       unifyPType (arg +. lbl) ptype |
-	       (lbl, ptype) <- prec ]
-unifyPType (Arg nr _ path) (ConT terms) = 
-    do (_, args, _, _) <- readState
-       case lookup path (ecatConstraints (args !! nr)) of
-         Just term -> return term
-         Nothing -> do term <- member terms
-		       updateArg nr (path, term)
-		       return term
-
-------------------------------------------------------------
--- unification of patterns and selection terms
-
-(=?=) :: STerm -> STerm -> CnvMonad ()
--- Wildcard      =?= _               = return ()
--- Var x         =?= term            = addBinding x term
-Rec precord   =?= arg@(Arg _ _ _) = sequence_ [ pat =?= (arg +. lbl) |
-						(lbl, pat) <- precord ]
-pat           =?= Arg nr _ path   = updateArg nr (path, pat)
-(con :^ pats) =?= (con' :^ terms) = do guard (con==con' && length pats==length terms)
-				       sequence_ $ zipWith (=?=) pats terms
-Rec precord   =?= Rec record      = sequence_ [ maybe mzero (pat =?=) mterm |
-						(lbl, pat) <- precord,
-						let mterm = lookup lbl record ]
--- variants are not allowed in patterns, but in selection terms:
-term =?= Variants terms = member terms >>= (term =?=)
-pat =?= term = error $ "(=?=): " ++ prt pat ++ " =?= " ++ prt term
-
-----------------------------------------------------------------------
--- variable bindings (does not work correctly)
-{-
-addBinding x term = do (a, b, c, d, bindings) <- readState
-		       writeState (a, b, c, d, (x,term):bindings)
-
-readBinding x = do (_, _, _, _, bindings) <- readState
-		   return $ maybe (Var x) id $ lookup x bindings
--}
-
-------------------------------------------------------------
--- updating the MCF rule
-
-readArgCTypes :: CnvMonad [SLinType]
-readArgCTypes = do (_, _, _, env) <- readState
-		   return env
-
-updateArg :: Int -> Constraint -> CnvMonad ()
-updateArg arg cn
-    = do (head, args, lins, env) <- readState 
-	 args' <- updateNthM (addToECat cn) arg args
-	 writeState (head, args', lins, env)
-
-updateHead :: Constraint -> CnvMonad ()
-updateHead cn
-    = do (head, args, lins, env) <- readState
-	 head' <- addToECat cn head
-	 writeState (head', args, lins, env)
-
-updateLin :: Constraint -> CnvMonad ()
-updateLin (path, term) 
-    = do let newLins = term2lins term
-	 (head, args, lins, env) <- readState
-	 let lins' = lins ++ map (Lin path) newLins
-	 writeState (head, args, lins', env)
-
-term2lins :: STerm -> [[Symbol (SCat, SPath, Int) Token]]
-term2lins (Arg nr cat path) = return [Cat (cat, path, nr)]
-term2lins (Token str)       = return [Tok str]
-term2lins (t1 :++ t2)       = liftM2 (++) (term2lins t1) (term2lins t2)
-term2lins (Empty)           = return []
-term2lins (Variants terms)  = terms >>= term2lins
-term2lins term = error $ "term2lins: " ++ show term
-
-addToECat :: Constraint -> ECat -> CnvMonad ECat
-addToECat cn (ECat cat cns) = liftM (ECat cat) $ addConstraint cn cns
-
-addConstraint :: Constraint -> [Constraint] -> CnvMonad [Constraint]
-addConstraint cn0 (cn : cns)
-    | fst cn0 >  fst cn = liftM (cn:) (addConstraint cn0 cns)
-    | fst cn0 == fst cn = guard (snd cn0 == snd cn) >>
-			  return (cn : cns)
-addConstraint cn0 cns   = return (cn0 : cns)
-
-
-