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diff --git a/old-lib/resource/english/BackwardEng.gf b/old-lib/resource/english/BackwardEng.gf
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+++ b/old-lib/resource/english/BackwardEng.gf
@@ -0,0 +1,76 @@
+concrete BackwardEng of Backward = CatEng ** open ResEng in {
+
+  flags optimize=all_subs ;
+
+  lin
+
+-- A repository of obsolete constructs, needed for backward compatibility.
+-- They create spurious ambiguities if used in combination with Lang.
+
+-- from Verb 19/4/2008
+
+    ComplV2 v np = insertObj (\\_ => v.c2 ++ np.s ! Acc) (predV v) ;
+    ComplV3 v np np2 = 
+      insertObj (\\_ => v.c2 ++ np.s ! Acc ++ v.c3 ++ np2.s ! Acc) (predV v) ;
+    ComplV2V v np vp = 
+      insertObj (\\a => infVP v.isAux vp a)
+        (insertObj (\\_ => v.c2 ++ np.s ! Acc) (predV v)) ;
+    ComplV2S v np s = 
+      insertObj (\\_ => conjThat ++ s.s)
+        (insertObj (\\_ => v.c2 ++ np.s ! Acc) (predV v)) ;
+    ComplV2Q v np q = 
+      insertObj (\\_ => q.s ! QIndir) 
+        (insertObj (\\_ => v.c2 ++ np.s ! Acc) (predV v)) ;
+    ComplV2A v np ap = 
+      insertObj (\\_ => v.c2 ++ np.s ! Acc ++ ap.s ! np.a) (predV v) ;
+
+    ReflV2 v = insertObj (\\a => v.c2 ++ reflPron ! a) (predV v) ;
+
+-- from Sentence 19/4/2008
+
+    SlashV2 np v2 = 
+      mkClause (np.s ! Nom) np.a (predV v2) ** {c2 = v2.c2} ;
+
+    SlashVVV2 np vv v2 = 
+      mkClause (np.s ! Nom) np.a 
+        (insertObj (\\a => infVP vv.isAux (predV v2) a) (predVV vv))  **
+        {c2 = v2.c2} ;
+
+-- from Noun 19/4/2008
+
+    NumInt n = {s = n.s ; n = Pl} ; 
+    OrdInt n = {s = n.s ++ "th"} ; --- DEPRECATED
+
+    DetSg quant ord = {
+      s = quant.s ! Sg ++ ord.s ; 
+      n = Sg
+      } ;
+
+    DetPl quant num ord = {
+      s = quant.s ! num.n ++ num.s ++ ord.s ; 
+      n = num.n
+      } ;
+
+    NoNum = {s = []; n = Pl } ;
+
+    DefArt = {s = \\_ => artDef} ;
+
+    IndefArt = {
+      s = table {
+        Sg => artIndef ; 
+        Pl => []
+        }
+      } ;
+
+    MassDet = {s = \\_ => []} ;
+
+
+
+-- from Structural 19/4/2008
+
+    that_NP = regNP "that" Sg ;
+    these_NP = regNP "these" Pl ;
+    this_NP = regNP "this" Sg ;
+    those_NP = regNP "those" Pl ;
+
+}