: These variants may introduce subtle design differences, such as variations in line height, character spacing, or stroke width, to offer designers more options for creating visual hierarchy or to suit different content types. For instance, F2 might offer a slightly more condensed design for space-saving needs, while F3 and F4 could introduce italic or bold weight variations to enhance typographic flexibility.
If you are seeing these names in an error message while opening a PDF in software like Adobe Illustrator or Affinity Designer, the original fonts are likely not installed on your system. Impossible fonts to be found / Fontes impossíveis de achar Cidfont-f1 F2 F3 F4 F5 F6