Converts characters in a file from one codeset to another codeset.
   The converted characters are written to an output file.
   Format:
        ICONV CONVERT infile outfile
1 – Parameters
   infile
     The file specification of the file that contains the characters
     to be converted.  (Use the /FROMCODE qualifier to specify the
     codeset of the characters in this file.)
   outfile
     The file specification of the file created by ICONV CONVERT.
     (Use the /TOCODE qualifier to specify the codeset of the
     characters in this file.)
2 – Qualifiers
   /FROMCODE=fromcodeset
     A required qualifier that specifies the codeset of the
     characters in the input file (infile).
   /TOCODE=tocodeset
     A required qualifier that specifies the codeset of the
     characters in the output file (outfile).
     Public conversion table files are in the directory defined by
     the logical name SYS$I18N_ICONV.  Put new conversion table files
     in the same directory if you want to make them available
     system-wide.