A link annotation: a hypertext link to a destination or an action.
public sealed class PdfLinkAnnotation : PdfAnnotation
ISO 32000-2 §12.5.6.5, Table 176 (PDF 1.0). A link needs no appearance stream (§12.5.2). Dest is not permitted with A; when a file has both, both are exposed, LinkActionAndDest is recorded, and Action is the one to perform.
kind:method, kind:property, kind:ctor. Press Esc to clear.ActionGets the action performed when the link is activated (A, PDF 1.1), or null.ActivationRegionGets the region that activates the link: QuadPoints when present and inside the rectangle, else the rectangle as one quadrilateral.DestinationGets the destination displayed when the link is activated (Dest): explicit or named; null when absent.HighlightModeGets the visual effect when the link is activated (H, PDF 1.2); default invert.PreviousUriActionGets the URI action formerly associated with the link, for reordering the actions of a link (PA, PDF 1.3), or null.QuadPointsGets the quadrilaterals of the link's region (QuadPoints, PDF 1.6), as stored; empty when absent.