= /^Expenses:Books/
  (Liabilities:Taxes)             -0.10

~ Monthly
  Assets:Bank:Checking          $500.00
  Income:Salary

2004/05/01 * Checking balance
  Assets:Bank:Checking        $1,000.00
  Equity:Opening Balances

2004/05/01 * Investment balance
  Assets:Brokerage              50 AAPL @ $30.00
  Equity:Opening Balances

2004/05/14 * Pay day
  Assets:Bank:Checking          $500.00
  Income:Salary

2004/05/27 Book Store
  Expenses:Books                 $20.00
  Liabilities:MasterCard

2004/05/27 (100) Credit card company
  Liabilities:MasterCard         $20.00
  Assets:Bank:Checking