All users are invited to add helpful information about using any version of
PC-DOS to this file (ADDENDUM.HLP).  All information should be entered in ASCII
character format.  When making an entry, please include the version of DOS the
comments are relevant for.
                                            Thanks, CB
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A shortcut for accessing subdirectories:
  If you are a number of subdirectories down in a tree and want to specify
  another subdirectory higher in the tree or at the same level, the ".."
  entries in the directories provide a shortcut.  Consider the following
  directory tree:
                     .----- \U3  <--- get to U2 by entering DIR ..\U2
                    /
         .------ \U1 ------ \U2  <--- get to U1 by entering CD ..
   D:\SUB
         `------ \L1 ------ \L2  <--- get to U2 by entering CD ..\..\U1\U2
                    \
                     `----- \L3  <--- get to SUB by entering DIR ..\..

  Each ".." separated by backslashes takes you up one directory level.  This
  mechanism works for many DOS commands, such as DIR, CHDIR, COPY, etc.
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DOS 2.10 Bug in the REN command:
  If you try to rename a subdirectory rather than a file, the first file in the
  subdirectory is renamed to the file specified, and the directory you were
  trying to rename is not renamed.  This action is performed even though an
  error message is generated (however sometimes the error message is not even
  generated).  This bug applies to all subdirectories I've tested (ie. at any
  directory level in the tree structure).
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e longest path allowed
        from the root directory to the last level is 63 characters.

file