\defaultfontfeatures[Pennstander-Regular]
{
  Extension           = .otf,
  UprightFont         = Pennstander-Regular,
  ItalicFont          = Pennstander-ItalicRegular,
  BoldFont            = Pennstander-SemiBold,
  BoldItalicFont      = Pennstander-ItalicSemiBold,
  Ligatures           = {Common,TeX}
}