Represents the "MH" entry of the media clip section 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: 277, page 495.

The ISO PDF Specification, ISO 32000-2:2017 PDF 2.0; Table: 288, page 620.

The MH entry references a must-honour clip section parameter dictionary specifying the start and end time offsets for this section. These offsets must be honoured for the section to play correctly.