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# FxField

Constants used to identify a field.

```
typealias FxField = Int
```

## Discussion

Prior to FxPlug 1.2, this type was used to identify field order. As of FxPlug 1.2, it is used to identify the field of an image.

## Topics

### Constants

[`var kFxField_NONE: Int`](/documentation/professional_video_applications/kFxField_NONE)

Full frame, progressive (no fields).

[`var kFxField_UPPER: Int`](/documentation/professional_video_applications/kFxField_UPPER)

Upper field.

[`var kFxField_LOWER: Int`](/documentation/professional_video_applications/kFxField_LOWER)

Lower field.


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