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# preferencesIdentifier

The identifier of the receiver’s preferences.

```
var preferencesIdentifier: String! { get set }
```

## Discussion

It is fixed to the keys used to store the receiver’s preferences in the user defaults database. `WebView` objects can share instances of the `WebPreferences` class by using the same preferences identifier.

## See Also

[`autosaves`](/documentation/WebKit/WebPreferences/autosaves)

A Boolean that indicates whether or not the receiver’s attributes are automatically stored in the user defaults database.


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