Represents the "D" entry of the border style dictionary object.

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

It contains an array which contains Elements.

For definitive details see:.

The ISO PDF Specification, ISO 32000-1:2008 PDF 1.7; Table: 166, page 387.

The ISO PDF Specification, ISO 32000-2:2017 PDF 2.0; Table: 168, page 470.

The dash array is used only when the S entry is Dashed. It is interpreted identically to the PDF graphics dash-array operator: alternating lengths of dashes and gaps.