Represents the "BaseEncoding" entry of the encoding dictionary object.

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

It contains a string representing a PDF name object.

This item may take one of the following valid values:.

• MacRomanEncoding
• MacExpertEncoding
• WinAnsiEncoding

For definitive details see:.

The ISO PDF Specification, ISO 32000-1:2008 PDF 1.7; Table: 114, page 263.

The ISO PDF Specification, ISO 32000-2:2017 PDF 2.0; Table: 112, page 320.

The three permitted values are MacRomanEncoding, MacExpertEncoding, and WinAnsiEncoding. If absent, the starting point is the font's own built-in encoding rather than any standard one.

MacExpertEncoding is designed for expert-set fonts that contain special characters such as old-style figures, fractions, and ligatures. It is rarely used outside specialist typography.