$parentWriter
$parentWriter : \PhpOffice\PhpSpreadsheet\Writer\Xlsx
Parent Xlsx object.
$parentWriter : \PhpOffice\PhpSpreadsheet\Writer\Xlsx
Parent Xlsx object.
$majorFonts : array
Map of Major fonts to write.
$minorFonts : array
Map of Minor fonts to write.
$colourScheme : array
Map of core colours.