PATCH       
  Syntax:
      PATCH filename{.typ} {n}
  Explanation:
  The PATCH command displays or installs patch  number  n   to  the
  CP/M  3  system  or  command  files.  The  patch number n must be
  between 1 and 32 inclusive.
  Example:
  A>PATCH SHOW 2
       Patches the  SHOW.COM  system  file  with patch number 2.
  
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