Represents the "M" entry of the media screen parameters mh/be dictionary object.

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

It contains an integer representing a PDF numeric object.

The PDF specification states that this item assumes a value of 0 if no value has been provided.

For definitive details see:.

The ISO PDF Specification, ISO 32000-1:2008 PDF 1.7; Table: 283, page 499.

The ISO PDF Specification, ISO 32000-2:2017 PDF 2.0; Table: 294, page 625.

The M entry specifies which monitor to use for playback: 0 for the monitor showing the largest part of the annotation, 1 for the monitor showing the smallest part, 2 for the primary monitor, and 3 for the monitor showing the largest part of the page.