This string represents a specific configuration for a (a font format used for large character sets, often for Chinese, Japanese, or Korean languages). It dictates that the font named "f1" should be rendered with a standard weight, upright posture, and a fixed (monospaced) width.
The Mystery of "CIDFont+F1": Decoding PDF Font Errors If you’ve ever opened a PDF only to find the text replaced by dots, garbled characters, or a frustrating error message saying "CIDFont+F1 cannot be created or found," cidfont f1 normal fixed
In the sequence cidfont f1 normal fixed , the F1 is the simplest element: it is a , usually an indirect object key in a PDF’s /Resources dictionary. Report: Understanding cidfont f1 normal fixed CIDFont This