Represents the "St" entry of the page label 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 1 if no value has been provided.

For definitive details see:.

The ISO PDF Specification, ISO 32000-1:2008 PDF 1.7; Table: 159, page 375.

The ISO PDF Specification, ISO 32000-2:2017 PDF 2.0; Table: 161, page 456.

Setting St to a value greater than one allows a range to continue a numbering sequence from a prior range, for example when an appendix must start at a number higher than one.