| NAnt  Help  Element Reference  Filter | v0.85 | 
Allows a file's content to be modified while performing an operation.
| Attribute | Type | Description | Required | 
|---|---|---|---|
| if | bool | If true then the filter will be used; otherwise, skipped. The default is true. | False | 
| unless | bool | Opposite of if. If false then the filter will be executed; otherwise, skipped. The default is false. | False |