Cid Font F1 F2 F3 F4 <90% FAST>

CID (Character Identifier) fonts are a font format designed for large character sets – especially for Asian languages like Japanese, Chinese, and Korean. Unlike standard fonts, CID fonts separate the character shapes (glyphs) from the encoding (mapping).

It seems you're asking for a (e.g., a social media caption, forum post, or blog entry) that covers CID fonts and the labels F1, F2, F3, F4 .

Ever opened your font menu in Adobe Acrobat, InDesign, or a RIP (Raster Image Processor) and seen a single font name followed by ? Here’s what that means.