|check|''account owing for''| Bob |''is''|0.00|

|''begin transaction for client''| Bob |''staff''| Bill |
|''rent''|1||Tricycle|''for''|2 day|
|''pay on account $''|40.00|
|''complete transaction''|

|check|''account owing for''| Bob |''is''|40.00|

|''time is now''| 2004/05/07 09:01|

|''begin transaction for client''| Bob |''staff''| Bill |
|''return items''|1||Tricycle|
|''refund account $''|20.00|
|''complete transaction''|

|check|''account owing for''| Bob |''is''|20.00|
