Represents the "Subtype" entry of the embedded font stream dictionary object.

It is defined as part of the PDF 1.2 specification.

It contains a string representing a PDF name object.

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

• Type1C
• CIDFontType0C
• OpenType

For definitive details see:.

The ISO PDF Specification, ISO 32000-1:2008 PDF 1.7; Table: 127, page 290.

The ISO PDF Specification, ISO 32000-2:2017 PDF 2.0; Table: 125, page 351.