\defaultfontfeatures[XCharter] { Extension = .otf , UprightFont = XCharter-Roman, BoldFont = XCharter-Bold, ItalicFont = XCharter-Italic, BoldItalicFont = XCharter-BoldItalic, SlantedFont = XCharter-Slanted, BoldSlantedFont = XCharter-BoldSlanted, SmallCapsFeatures = {Letters=SmallCaps} }