Represents the "MH" entry of the media player info 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: 291, page 503.

The ISO PDF Specification, ISO 32000-2:2017 PDF 2.0; Table: 302, page 630.

The MH entry references a must-honour player parameter dictionary carrying player-specific settings that must be satisfied when using this player.