Represents the "T" entry of the web capture page set 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: 353, page 622.

The ISO PDF Specification, ISO 32000-2:2017 PDF 2.0; Table: 389, page 802.

The T entry holds the captured page title as a text string, typically from the HTML title element, preserving the original page title in the PDF.