anchor.diff:      Limit = if Limit0 < 50 -> Limit0; true -> 50 end,
       Skip = couch_util:get_value(skip, Opts, 0),
       Fields = couch_util:get_value(fields, Opts, all_fields),
  -
       {ok, #cursor{
           db = Db,
           index = Index,
  
positive.code:         skip = Skip,
          query_args = QueryArgs,
          user_fun = UserFun,
          user_acc = UserAcc
      },
      try
          execute(CAcc)
  
negative.code:     limit,
      skip,
      user_fun,
      user_acc,
      fields
  }).
  
  
  