qa.hlp (Table of Contents; Topic list)
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Int 21H Function 66H
   Summary  Notes  Back
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▀ When the Select Code Page subfunction is used, MS-DOS gets the new code
  page from the COUNTRY.SYS file. The device must be previously prepared
  for code page switching with the appropriate DEVICE= directive in the
  CONFIG.SYS file and NLSFUNC and MODE CP PREPARE commands (usually placed
  in the AUTOEXEC.BAT file).
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