This class represents the border effect dictionary. This is definitively detailed in:.

The ISO PDF Specification, ISO 32000-1:2008 PDF 1.7; Table: 167, page 387.

The ISO PDF Specification, ISO 32000-2:2017 PDF 2.0; Table: 169, page 470.

System.Object
    WebSupergoo.ABCpdf14.Elements.Element
       WebSupergoo.ABCpdf14.Elements.BorderEffectElement

A border effect dictionary qualifies the border of a square, circle, or free-text annotation with a visual effect. The only defined effect is a cloudy border, which draws the boundary as a series of arcs.

The I entry controls the cloud intensity: larger values produce more pronounced arcs. A value of zero effectively disables the cloud effect.