Invalid package aliases in Rd file 'package-ptf.Rd':
  ‘package-ptf-package’
Invalid package aliases in Rd file 'package-ptf.Rd':
  ‘package-ptf-package’
Invalid package aliases in Rd file 'package-ptf.Rd':
  ‘package-ptf-package’
Invalid package aliases in Rd file 'package-ptf.Rd':
  ‘package-ptf-package’
Invalid package aliases in Rd file 'package-ptf.Rd':
  'package-ptf-package'