\font\SILmfont={[/usr/local/texlive/2024/texmf-dist/fonts/opentype/gust/poltawski/antpoltexpd-italic.otf]:+clig;+liga;+tlig;+ss04}\SILmfont
\def\SILmfontname{AntPoltExpd-Italic; Stylistic Set 4}%