| Attribute | Description | Type |
| description | Sets a description of the current data type. | String |
| id | Sets an id that can be used to reference this element. | String |
| if | Set the 'if' condition. The processor will be ignored unless the property is defined. The value of property is insignificant, but values that would imply misinterpretation ("false", "no") will throw an exception when isActive() is evaluated. | String |
| prototype | Sets file to precompile. Should be a source file that includes only one unguarded header file. Default value is "stdafx.cpp". | File |
| refid | Specifies that this element should behave as if the content of the element with the matching id attribute was inserted at this location. | Reference |
| unless | Set the 'unless' condition. If named property exists at execution time, the processor will be ignored. Value of property is insignificant, but values that would imply misinterpretation ("false", "no") of the behavior will throw an exception when isActive is called. | String |