\font\SILmfont={[/usr/local/texlive/2024/texmf-dist/fonts/opentype/nowacki/iwona/IwonaCond-Italic.otf]:+clig;+liga;+tlig;+smcp}\SILmfont
\def\SILmfontname{IwonaCond-Italic; Small Capitals}%