anchor.diff:  	   (_, Err) ->
   		Err
   	end,
  -    io:format("EXPECT 'inform-request' (true)"
  -	      "~n   with"
  -	      "~n      Varbinds: ~p~n", [ExpVBs]),
  +    io_format_expect("'inform-request' (true) with"
  +                     "~n      Varbinds: ~p", [ExpVBs]),
       do_expect2(Check, 'inform-request', noError, 0, ExpVBs, get_timeout());
   
   do_expect({inform, {error, EStat, EIdx}}, ExpVBs) 
  
positive.code: %% ExpVBs         -> exp_varbinds() | {VbsCondition, exp_varbinds()}
  do_expect(ExpVBs) ->
      Check = fun(_, R) -> R end,
      io:format("EXPECT 'get-response'"
  	      "~n   with"
  	      "~n      Varbinds: ~p~n", [ExpVBs]),
      do_expect2(Check, 'get-response', noError, 0, ExpVBs, get_timeout()).
  
  
  do_expect(v2trap, ExpVBs) ->
      Check = fun(_, R) -> R end,
      io:format("EXPECT 'snmpv2-trap'"
  	      "~n   with"
  	      "~n      Varbinds: ~p~n", [ExpVBs]),
      do_expect2(Check, 'snmpv2-trap', noError, 0, ExpVBs, get_timeout());
  
  
  do_expect(report, ExpVBs) ->
      Check = fun(_, R) -> R end,
      io:format("EXPECT 'report'"
  	      "~n   with"
  	      "~n      Varbinds: ~p~n", [ExpVBs]),
      do_expect2(Check, 'report', noError, 0, ExpVBs, get_timeout());
  
  
  
negative.code: 	     error_status = Err2, 
  	     error_index  = Idx2,
  	     varbinds     = VBs2} ->
  	    io_format_expect("received unexpected pdu with (15) "
                               "~n   Type:         ~p"
                               "~n   ReqId:        ~p"
                               "~n   Errot status: ~p"
                               "~n   Error index:  ~p"
                               "~n   Varbinds:     ~p",
                               [Type2, ReqId, Err2, Idx2, VBs2]),
  	    {error, 
  	     {unexpected_pdu, 
  	      {Type,  Err,  Idx, purify_oids(ExpVBs)}, 
  