- Because the <xref:System.Windows.Media.Animation.VectorAnimation> class inherits from <xref:System.Windows.Freezable>, <xref:System.Windows.Media.Animation.VectorAnimation> objects gain several special features, which include the following: they can be declared as [resources](/dotnet/desktop-wpf/fundamentals/xaml-resources-define),shared among multiple objects, made read-only to improve performance, cloned, and made thread-safe. For more information about the different features provided by <xref:System.Windows.Freezable> objects, see the [Freezable Objects Overview](/dotnet/framework/wpf/advanced/freezable-objects-overview).
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