Represents the "Solidities" entry of the devicen mixing hints dictionary object.

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

It contains an Element.

For definitive details see:.

The ISO PDF Specification, ISO 32000-1:2008 PDF 1.7; Table: 73, page 163.

The ISO PDF Specification, ISO 32000-2:2017 PDF 2.0; Table: 72, page 206.

The Solidities dictionary maps colorant names to fractional opacity values at full tint. A value of 1.0 means the ink is fully opaque at 100% coverage; lower values indicate a degree of transparency that allows underlying inks to show through.

Solidity values are used by soft-proofing tools to simulate overprint effects when inks are applied on top of each other.