Object – Nsp object data type
  List – list data type
  list – list creation
  hash – hash tables
  File – File data type
  Mat – matrix data type
  BMat – matrix data type
  Smat – matrix data type
  smat_create – string matrix creation
  Pmat – matrix data type
  Mat – Max plus matrix data type
  m2mp – Max plus matrix data type
  Cells – matrix of nsp objects data type
  Serial – Container for nsp serialized object
  serialize – serialize an nsp object
  SndFile – SndFile data type