anchor.diff:            ("("+System.String.Join(", ", List.map fst mrv)+")", RType("("+System.String.Join(", ", List.map (snd >> rustTypeToString) mrv)+")"))
           match nrty with
           |Ptr(Const(uty)) ->
  -          ("hr", RConstPtr(RType(tyToRust uty)))
  +          ("_hr", RConstPtr(RType(tyToRust uty)))
           |TypedefRef "HRESULT" ->
             match !returnVals |> Set.toList with
             |[] ->
  -            ("hr2ret(hr,hr)",RType "HResult<HRESULT>")
  +            ("hr2ret(_hr,_hr)",RType "HResult<HRESULT>")
             |[(ex,t)] ->
  -            ("hr2ret(hr,"+ex+")", RType ("HResult<"+(rustTypeToString t)+">"))
  +            ("hr2ret(_hr,"+ex+")", RType ("HResult<"+(rustTypeToString t)+">"))
             |mrv ->
               let (ex,t)=mrv2tuple mrv
  -            ("hr2ret(hr,"+ex+")", RType ("HResult<"+(rustTypeToString t)+">"))
  +            ("hr2ret(_hr,"+ex+")", RType ("HResult<"+(rustTypeToString t)+">"))
           |StructRef sname |TypedefRef sname |EnumRef sname ->
             match !returnVals |> Set.toList with
             |[] ->
  -            ("hr",RType sname)
  +            ("_hr",RType sname)
             |[(ex,t)] ->
  -            ("(hr,"+ex+")", RType ("("+sname+", "+(rustTypeToString t)+")"))
  +            ("(_hr,"+ex+")", RType ("("+sname+", "+(rustTypeToString t)+")"))
             |mrv ->
               let (ex,t)=mrv2tuple (("hr", RType sname) :: mrv)
  -            ("hr2ret(hr,"+ex+")", RType ("HResult<"+(rustTypeToString t)+">"))
  +            ("hr2ret(_hr,"+ex+")", RType ("HResult<"+(rustTypeToString t)+">"))
           |Primitive Void ->
             match !returnVals |> Set.toList with
             |[] ->
  
positive.code:         yield! lvs |> Map.toSeq 
            |> Seq.map 
              (fun (lv, {mut=mut;ty=ty;initExpression=init}) ->
                let muts=if mut then "mut " else ""
                let lvtype=": "+(rustTypeToString ty)
                let inits=if System.String.IsNullOrEmpty init then ";" else " = "+init+";"
  
negative.code:   let ftext=
      System.String.Format(
        @"
  #[allow(non_snake_case)]
  pub {0} {{
  {1}
    let _hr={4} {{ {2} }};
    {3}
  }}
  "       ,signature,
          lvAndInit,
          nativeInvocation,
          rval,
          if unsafe then "" else "unsafe")
    (ftext, signature)
  
  //-------------------------------------------------------------------------------------
  