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

It is an optional entry defined as part of the PDF 1.0 specification.

It contains an integer representing a PDF numeric object.

The PDF specification states that this item assumes a value of 0 if no value has been provided.

For definitive details see:.

The ISO PDF Specification, ISO 32000-1:2008 PDF 1.7; Table: 30, page 78.

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 104.

The Rotate entry specifies the number of degrees the page should be rotated clockwise when displayed or printed. Valid values are 0, 90, 180, and 270. If absent, the page inherits rotation from its parent tree node.