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# Property List Mutability Options

Option flags that determine the degree of mutability of newly created property lists.

## Topics

### Constants

[`kCFPropertyListImmutable`](/documentation/CoreFoundation/CFPropertyListMutabilityOptions/kCFPropertyListImmutable)

Specifies that the property list should be immutable.

[`static var mutableContainers: CFPropertyListMutabilityOptions`](/documentation/CoreFoundation/CFPropertyListMutabilityOptions/mutableContainers)

Specifies that the property list should have mutable containers but immutable leaves.

[`static var mutableContainersAndLeaves: CFPropertyListMutabilityOptions`](/documentation/CoreFoundation/CFPropertyListMutabilityOptions/mutableContainersAndLeaves)

Specifies that the property list should have mutable containers and mutable leaves.


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