The XLATE$ function translates one string  to  another  by  referencing  a
  table  string.  The XLATE$ function can, for example, translate the string
  EBCDIC to an ASCII string.

  Example

  DECLARE STRING A, table, source
  A = "abcdefghijklmnopqrstuvwxyz"
  table = STRING$(65, 0) + A
  LINPUT "Type a string of uppercase letters";source
  PRINT XLATE$(source, table)

  Output

  Type a string of uppercase letters? ABCDEFG
  abcdefg