This class represents the point data dictionary. This is definitively detailed in:.

The ISO PDF Specification, ISO 32000-2:2017 PDF 2.0; Table: 272, page 602.

Adobe Supplement to the ISO 32000, BaseVersion: 1.7, ExtensionLevel: 3; Table: 8.111d, page 53.

System.Object
    WebSupergoo.ABCpdf14.Elements.Element
       WebSupergoo.ABCpdf14.Elements.PointDataElement

A point data dictionary stores named arrays of geographic point data associated with a page or viewport in geospatial PDFs. The Names array labels the data columns. The XPTS stream holds the point data. Subtype classifies the kind of point data.