Represents the "View" entry of the optional content usage dictionary object.

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

It contains an OptionalContentUsageViewElement.

For definitive details see:.

The ISO PDF Specification, ISO 32000-1:2008 PDF 1.7; Table: 102, page 233.

The ISO PDF Specification, ISO 32000-2:2017 PDF 2.0; Table: 100, page 285.

The View sub-dictionary controls whether this group is visible in an interactive viewer. It contains a ViewState entry of ON or OFF. This allows groups to be defined as print-only or screen-only.