This class represents the docmdp transform parameters dictionary. This is definitively detailed in:.

The ISO PDF Specification, ISO 32000-1:2008 PDF 1.7; Table: 254, page 471.

The ISO PDF Specification, ISO 32000-2:2017 PDF 2.0; Table: 257, page 569.

System.Object
    WebSupergoo.ABCpdf14.Elements.Element
       WebSupergoo.ABCpdf14.Elements.TransformParametersElement
          WebSupergoo.ABCpdf14.Elements.DocMDPTransformParametersElement

A DocMDP transform parameters dictionary constrains which modifications to the signed document are permitted without invalidating the signature. The P entry selects the permission level: 1 (no modifications), 2 (form filling and signing), or 3 (additionally annotation creation and deletion).