reg --collapse --empty
<<<
2008/01/01 January
    Expenses:Books          $10.00
    Assets:Cash

2008/01/31=2008/01/01 End of January
    Expenses:Books          $10.00  ; [=2008/02/01]
    Assets:Cash

2008/02/01 February
    Expenses:Books          $20.00
    Assets:Cash
>>>1
08-Jan-01 January               <Total>                           0            0
08-Jan-31 End of January        <Total>                           0            0
08-Feb-01 February              <Total>                           0            0
>>>2
=== 0