anchor.diff:    ?assertOrderAccepted(3, Order, 3),
   
     {ok, 4} = smk_client:account_state(C),
  +  NextExp = Exp - 250,
     ?assertAccountState(4, #seto_account_state{
  -      exposure = #seto_decimal{value=-250, exponent=2}
  +      exposure = #seto_decimal{value=NextExp, exponent=2}
       }),
   
     {ok, 5} = smk_client:order_cancel(C, Order),
  
positive.code: 
    {ok, 6} = smk_client:account_state(C),
    ?assertAccountState(6, #seto_account_state{
        exposure = #seto_decimal{value=0, exponent=2}
      }),
  
    {ok, 7} = smk_client:logout(C),
  
negative.code: 
    {ok, 2} = smk_client:account_state(C),
    ?assertAccountState(2, #seto_account_state{
        exposure = #seto_decimal{value=Exp, exponent=2}
      }),
  
    Qty = 100000,
  