io >> Input/Output
IO
  append_save
  calccelladdress
  fexist
  getusedrange
  object2json
  oct2ods
  oct2xls
  ods2oct
  odsclose
  odsfinfo
  odsopen
  odsread
  odswrite
  parse_sp_range
  parsecell
  spsh_chkrange
  spsh_prstype
  xls2oct
  xlsclose
  xlsfinfo
  xlsopen
  xlsread
  xlswrite
