\defaultfontfeatures[Computer Modern Graded G19 Serif]{
  Extension=.otf,
  UprightFont=ComputerModernGradedG19Serif10Regular,
  BoldFont=ComputerModernGradedG19Serif10Bold,
  ItalicFont=ComputerModernGradedG19Serif10Italic,
  BoldItalicFont=ComputerModernGradedG19Serif10BoldItalic,
  SlantedFont=ComputerModernGradedG19Serif10Slanted,
  BoldSlantedFont=ComputerModernGradedG19Serif10BoldSlanted,
  SmallCapsFont=ComputerModernGradedG19Serif10SmallCaps,
  UprightFeatures = {
    SizeFeatures = {
      {Size={-5.5}, Font=ComputerModernGradedG19Serif5Regular},
      {Size={5.5-6.5}, Font=ComputerModernGradedG19Serif6Regular},
      {Size={6.5-7.5}, Font=ComputerModernGradedG19Serif7Regular},
      {Size={7.5-8.5}, Font=ComputerModernGradedG19Serif8Regular},
      {Size={8.5-9.5}, Font=ComputerModernGradedG19Serif9Regular},
      {Size={9.5-11.5}, Font=ComputerModernGradedG19Serif10Regular},
      {Size={11.5-15.8}, Font=ComputerModernGradedG19Serif12Regular},
      {Size={15.8-}, Font=ComputerModernGradedG19Serif17Regular},
    }
  },
  BoldFeatures = {
    SizeFeatures = {
      {Size={-5.5}, Font=ComputerModernGradedG19Serif5Bold},
      {Size={5.5-6.5}, Font=ComputerModernGradedG19Serif6Bold},
      {Size={6.5-7.5}, Font=ComputerModernGradedG19Serif7Bold},
      {Size={7.5-8.5}, Font=ComputerModernGradedG19Serif8Bold},
      {Size={8.5-9.5}, Font=ComputerModernGradedG19Serif9Bold},
      {Size={9.5-11.5}, Font=ComputerModernGradedG19Serif10Bold},
      {Size={11.5-}, Font=ComputerModernGradedG19Serif12Bold},
    }
  },
  ItalicFeatures = {
    SizeFeatures = {
      {Size={-7.5}, Font=ComputerModernGradedG19Serif7Italic},
      {Size={7.5-8.5}, Font=ComputerModernGradedG19Serif8Italic},
      {Size={8.5-9.5}, Font=ComputerModernGradedG19Serif9Italic},
      {Size={9.5-11.5}, Font=ComputerModernGradedG19Serif10Italic},
      {Size={11.5-}, Font=ComputerModernGradedG19Serif12Italic},
    }
  },
  SlantedFeatures = {
    SizeFeatures = {
      {Size={-8.5}, Font=ComputerModernGradedG19Serif8Slanted},
      {Size={8.5-9.5}, Font=ComputerModernGradedG19Serif9Slanted},
      {Size={9.5-11.5}, Font=ComputerModernGradedG19Serif10Slanted},
      {Size={11.5-}, Font=ComputerModernGradedG19Serif12Slanted},
    }
  },
}