* Once it's past the time for the next maintenace of an identified rental item, it's not available for rental

 * Action:
|''begin admin transaction''| Bill |
|''add''|0|''of type''|barbeque|''costing''|20.00|''/hour''|100.00|''/day''|500.00|''/week''|200.00|''bond''|
|''add identified''|bbq001|''of type''|barbeque|''last maintained''|2004/4/15 11:34|''period of''|3|''months''|
|''complete transaction''|

|''time is now''| 2004/08/06 09:02|
----
 * It's not available:
|''rental item list''|
| ''name''| ''free count'' |
|barbeque | 0         |
 * It's still to be maintained:
|''identified rental item subset''|
|''identifier''|''last maintained''|
|bbq001|2004/4/15 11:34|