bal command returns child accounts and grand totals when it shouldn't?

[ed]

Using the sample.dat from the docs directory (which has a different
syntax to the info file) the bal command for specific accounts returns
both child accounts and a grand total which the documentation claims
it shouldn't

nemesis:ledger ed$ ./ledger -f ~/sample.dat bal checking broker liab
           $1,480.00
             50 AAPL  Assets
           $1,480.00    Bank:Checking
             50 AAPL    Brokerage
             $-72.00  Liabilities
             $-70.00    MasterCard
              $-2.00    Taxes
--------------------
           $1,408.00
             50 AAPL