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diff --git a/next-lib/src/abstract/Extra.gf b/next-lib/src/abstract/Extra.gf
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--- a/next-lib/src/abstract/Extra.gf
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---1 More syntax rules
-
--- This module defines syntax rules that are not implemented in all
--- languages, but in more than one, so that it makes sense to offer a
--- common API.
-
-abstract Extra = Cat ** {
-
-  fun
-    GenNP       : NP -> Quant ;       -- this man's
-    ComplBareVS : VS -> S -> VP ;     -- know you go
-
-    StrandRelSlash   : RP -> ClSlash -> RCl ;   -- that he lives in
-    EmptyRelSlash    : ClSlash -> RCl ;   -- he lives in
-    StrandQuestSlash : IP -> ClSlash -> QCl ;   -- whom does John live with
-
--- $VP$ conjunction, which has different fragments implemented in
--- different languages - never a full $VP$, though.
-
-  cat
-    VPI ;
-    [VPI] {2} ;
-
-  fun
-    MkVPI : VP -> VPI ;
-    ConjVPI : Conj -> [VPI] -> VPI ;
-    ComplVPIVV : VV -> VPI -> VP ;
-
-
-}