\defaultfontfeatures[KpRoman]
  { Extension = .otf,
    UprightFont =     KpRoman-Regular,
    BoldFont =        KpRoman-Bold,
    ItalicFont =      KpRoman-Italic,
    BoldItalicFont =  KpRoman-BoldItalic,
    SlantedFont =     KpRoman-Regular,
    SlantedFeatures = {FakeSlant=0.19},
    BoldSlantedFont = KpRoman-Bold,
    BoldSlantedFeatures = {FakeSlant=0.19},
    SmallCapsFeatures = {Letters=PetiteCaps},
    Ligatures={Common,RequiredOff,RareOff,HistoricOff}
}