The F1, F2, and F3 versions were later expansions released via Japanese typography blogs. The "F" stands for "Form" or "Weight Grade." Today, the font is widely used in sim racing communities, F1 fan edits, and tech advertisements.
a specific document with these missing fonts, or are you looking for a technical explanation for a research paper? Impossible fonts to be found / Fontes impossíveis de achar Cid Font F1 F2 F3 Free Download
: These are simply serial markers (e.g., F1 might be regular, F2 bold). The F1, F2, and F3 versions were later
These usually represent different weights or styles of the same font (e.g., F1 might be Bold, while F2 is Regular). Common Real Identities: Impossible fonts to be found / Fontes impossíveis
Most F-series errors occur because the reader lacks the "Extended Asian Language Font Pack." Go to the official Adobe website.
To recap: