Represents the "MediaBox" entry of the page object object.

It is a required entry defined as part of the PDF 1.0 specification.

It contains a RectangleElement.

For definitive details see:.

The ISO PDF Specification, ISO 32000-1:2008 PDF 1.7; Table: 30, page 77.

Adobe Supplement to the ISO 32000, BaseVersion: 1.7, ExtensionLevel: 3; Table: 3.27, page 23.

The ISO PDF Specification, ISO 32000-2:2017 PDF 2.0; Table: 31, page 103.

The MediaBox defines the boundaries of the physical medium on which the page will be displayed or printed. All other page boxes must fall within or be equal to the MediaBox. It is inherited if not specified on the page object itself.