Unicode codepoints (for ToUnicode CMap, used by PDF text extraction / copy-paste).
Fontkit-assigned glyph ID for the shaped contextual form (e.g. uni0627.fina = id 9).
Advance width in points (scaled).
Horizontal offset in points (for positioned GPOS kerning etc.).
Vertical offset in points.
Unicode codepoints (for ToUnicode CMap, used by PDF text extraction / copy-paste).