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# Binding Dictionary Keys

The following values are used as keys in the dictionary returned by [`infoForBinding(_:)`](/documentation/ObjectiveC/NSObject-swift.class/infoForBinding(_:))

## Topics

### Constants

  <doc://com.apple.documentation/documentation/AppKit/NSBindingInfoKey/observedObject>

  <doc://com.apple.documentation/documentation/AppKit/NSBindingInfoKey/observedKeyPath>

  <doc://com.apple.documentation/documentation/AppKit/NSBindingInfoKey/options>


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