anchor.diff:  				end
   	end,
   	End = Fget(Fget, PageSize + 1, PageSize + RangeSize),
  -	End >= (PageSize * 2) + (PageSize div 2).
  +	End >= NumLogged.
   
   get_acct_usage() ->
   	[{userdata, [{doc,"Get a TMF635 acct usage"}]}].
  
positive.code: 				ok = ocs:add_client(Address, Secret),
  				F(F, N - 1)
  	end,
  	ok = Fadd(Fadd, (PageSize * 2) + (PageSize div 2)),
  	RangeSize = case PageSize > 25 of
  		true ->
  			25;
  		false ->
  			PageSize - 1
  	end,
  
negative.code: 				{ok, _} = ocs:add_subscriber(Identity, Password, []),
  				F(F, N - 1)
  	end,
  	NumAdded = (PageSize * 2) + (PageSize div 2) + 17,
  	ok = Fadd(Fadd, NumAdded),
  	RangeSize = case PageSize > 25 of
  		true ->
  			rand:uniform(PageSize - 10) + 10;
  		false ->
  			PageSize - 1
  	end,
  