Represents the "NeedsRendering" entry of the catalog dictionary object.

It is an optional entry defined as part of the PDF 1.7 specification. It was deprecated in PDF 2.0.

It contains a bool representing a PDF boolean object.

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

For definitive details see:.

The ISO PDF Specification, ISO 32000-1:2008 PDF 1.7; Table: 28, page 75.

Adobe Supplement to the ISO 32000, BaseVersion: 1.7, ExtensionLevel: 3; Table: 3.25, page 23.

The ISO PDF Specification, ISO 32000-2:2017 PDF 2.0; Table: 29, page 101.

The ISO PDF Specification, ISO 32000-1:2008 PDF 1.7; Table: 242, page 458.

The ISO PDF Specification, ISO 32000-2:2017 PDF 2.0; Table: 245, page 555.

The NeedsRendering entry, when true, indicates that the document contains XFA form content that must be rendered before the document can be displayed. This entry is used with dynamic XFA-based PDF forms.