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Specifies the activation conditions of a RichMediaAnnotation.
public static class RichMediaAnnotationActivation
The annotation is activated as soon as any part of the page that contains the annotation becomes visible.
public static PdfName PageBecomesVisible { get; }
The annotation is activated as soon as the page that contains the annotation receives focus as the current page.
public static PdfName PageReceivesFocus { get; }
The annotation is explicitly activated by a user action or script.
public static PdfName UserAction { get; }