Last updated: 2025. References: Adobe Technical Note #5014 (CID-Keyed Font Technology Overview), Adobe Supplement to the ISO 32000 (PDF 2.0), and the OpenType specification.
If a PDF generation script creates an alias F1 for a CIDFont but fails to embed the font file, the file becomes device-dependent. It relies on the viewer having the font. cidfont f1 f2 f3 f4 f5 f6 full