Represents the "K" entry of the ccittfax parameters 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: 11, page 30.

The ISO PDF Specification, ISO 32000-2:2017 PDF 2.0; Table: 11, page 43.

The K entry selects the CCITT encoding scheme. A value of 0 uses pure Group 3 one-dimensional encoding. A negative value uses Group 4 two-dimensional encoding. A positive value uses mixed Group 3 encoding where the value limits the number of consecutive two-dimensional rows.