If you have ever dug into a PostScript error log, inspected a PDF’s font properties, or troubleshooted a printer spooler, you have likely seen the cryptic tag CIDFont+F1 . It is important to clarify immediately: (like Arial or Times New Roman). It is a system-generated identifier for a subset of a CID-keyed font.
Overall Verdict: Not a user-friendly typeface, but a rock-solid system placeholder.