Represents the "RichMediaSettings" entry of the richmedia annotation object.

It is an optional entry defined as part of the PDF 1.7 Extension Level 3 specification.

It contains a RichMediaSettingsElement.

For definitive details see:.

Adobe Supplement to the ISO 32000, BaseVersion: 1.7, ExtensionLevel: 3; Table: 9.49, page 77.

The ISO PDF Specification, ISO 32000-2:2017 PDF 2.0; Table: 333, page 696.

The settings dictionary controls when the media activates and deactivates and what initial state it is in when activated. When absent the viewer uses default activation and deactivation behaviour.