#point_system.orthography__pointsystem  a system of writing or printing using patterns of raised dots that can be read by touch
  supertype:  orthography__writing_system__writingsystem  a method of representing the sounds of a language by written or printed symbols
  subtype:  Braille  a point system of writing in which patterns of raised dots represent letters and numerals

No statement uses or specializes point_system.orthography; click here to add one.