In many cases, these placeholders are mapped to common fonts. For instance, F1 often refers to Arial Bold , while F2 usually signifies Arial Regular .
Unlike simple fonts (Type 1 or TrueType) that use an 8-bit encoding (max 256 characters), CID-keyed fonts are designed for large character sets—essential for languages like Chinese, Japanese, and Korean (CJK). A CIDFont is a type of composite font that maps a CID (an integer) to a glyph description. cidfontf1 f2 f3 f4 f5 f6 updated
A Comprehensive Review and Update on CIDFonts: cidfontf1–f6 In many cases, these placeholders are mapped to common fonts