\font\SILmfont={[/usr/local/texlive/2024/texmf-dist/fonts/truetype/public/ysabeau/Ysabeau-ExtraLight.ttf]:+clig;+liga;+tlig;+smcp}\SILmfont
\def\SILmfontname{Ysabeau ExtraLight; Small Capitals}%