Represents the "P" entry of the collection subitem dictionary object.

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

It contains a string representing a PDF string object.

For definitive details see:.

The ISO PDF Specification, ISO 32000-1:2008 PDF 1.7; Table: 49, page 107.

The ISO PDF Specification, ISO 32000-2:2017 PDF 2.0; Table: 47, page 139.

The P entry, when present and false, indicates that the field data in D is not displayed for this item even though the entry is present. A value of true or the absence of P means the data is displayed normally.