Represents the "Q" entry of the interactive form dictionary object.

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

It contains an integer representing a PDF numeric object.

For definitive details see:.

The ISO PDF Specification, ISO 32000-1:2008 PDF 1.7; Table: 218, page 431.

The ISO PDF Specification, ISO 32000-2:2017 PDF 2.0; Table: 224, page 526.

The document-level quadding value applies to any field that does not specify its own Q entry. 0 is left, 1 is centred, and 2 is right.