| Name | Type | Options | Opt/Req | Description |
| fromDate | D | Const | Req | The low end of the range. |
| toDate | D | Const | Req | The high end of the range. |
| checkDate | D | Const | Opt | The date to be checked. If checkDate is not sent then %date() is used. |
| Returns: | N | n/a | n/a | *ON if checkDate is within range, *OFF if it is not. |