| Name | Value | Description |
| kDoNotRefreshOutOfDateParts | 3 | Do not refresh out-of-date parts if cache parts exist. |
| kRefreshOutOfDateParts | 2 | Always refresh out-of-date parts if cache parts are out-of-date. |
| kUseDefaultRefreshSetting | 1 | User Default Content Center Setting of Application options dialog. |