Represents the "PL" entry of the media clip data dictionary object.

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

It contains a MediaPlayersElement.

For definitive details see:.

The ISO PDF Specification, ISO 32000-1:2008 PDF 1.7; Table: 274, page 493.

The ISO PDF Specification, ISO 32000-2:2017 PDF 2.0; Table: 285, page 617.

The PL entry references a media players dictionary listing the media players that are acceptable or required for this clip. A reader consults this list when selecting a player.