The SFNS font is a masterpiece of digital typography—meticulously engineered, deeply tested, and visually unobtrusive. It makes Apple products feel effortless because you never notice the font. That is the highest praise a UI typeface can receive.
Apple solved this by creating optical sizes: sfns font
We can also write matrices: \[ \mathbf{A} = \begin{pmatrix} a_{11} & a_{12} \\ a_{21} & a_{22} \end{pmatrix}. \] The SFNS font is a masterpiece of digital
