| Attribute | Description | Required |
|---|
| property | The NAnt property name that should be used for the current iterated item. | True |
| item | The type of iteration that should be done. | True |
| in | The source of the iteration. | True |
| delim | The deliminator char. | False |
| failonerror | Determines whether task failure stops the build or is just reported. Default is "true." | False |
| verbose | Task reports detailed build log messages. Default is "false." | False |
| if | If true then the task will be executed; otherwise skipped. Default is "true." | False |
| unless | Opposite of if. If false then the task will be executed; otherwise skipped. Default is "false." | False |