anchor.diff:      prepend,
       resp,
       etag,
  -    username
  +    username,
  +    limit
   }).
   
   handle_global_changes_req(#httpd{method='GET'}=Req) ->
  
positive.code:                 resp=Resp1,
                  last_data_sent_time=os:timestamp()
              },
              {ok, Acc1}
      end;
  changes_callback({stop, EndSeq}, Acc) ->
      % Temporary upgrade clause - Case 24236
  
negative.code:     end.
  
  
  % This clause is only hit when _db_updates is queried with limit=0. For
  % limit>0, the request is stopped by maybe_finish/1.
  changes_callback({change, _}, #acc{limit=0}=Acc) ->
      {stop, Acc};
  
  % callbacks for continuous feed (newline-delimited JSON Objects)
  changes_callback(start, #acc{feed="continuous"}=Acc) ->
      #acc{resp=Req} = Acc,
  