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    From:    Kan Yabumoto           tech@xxcopy.com
    To:      XXCOPY user
    Subject: XXCOPY's User Prompts
    Date:    2009-10-18  (Revised)
    Variations in XXCOPY's user prompts:
      XXCOPY generates a wide range of user prompts for various reasons.
      The most common type is to alert the user for a possible loss of
      files --- typically before a file is about to be deleted, or even
      to be overwritten.
      The following switches control user prompts
         /P    // before each file copy
         /PC   // before creating a new file
         /PD   // before each directory is being processed
         /PJ   // before an overwrite with a different J-thingy type
         /PM   // before deleting an existing file on file-move (/MVF)
         /PN   // when an excessive number of /NX failures occurs
         /Po   // before a file overwrite (legacy /-Y)
         /PP   // enables the space-bar pause feature
         /PR   // before removing a file whose path contains reparce pt
         /PZ   // when /Z, /ZY, or /CLONE operation is invoked 
      The following switches control warning prompts
         /WD   // when a non-directory source is to be copied (*See below)
         /WL   // when the path length exceeds the limit
         /WR   // when the src or dst path contains a reparse point
         /WU   // when an unnecessary destination path is specified
      Note many of the above switches are set by default due to the
      nature of the prompt (a warning to alert the user for a possible
      loss of data).
          *Special note about /WD
             The /WD warning prompt appears when the source specifier
             is made of a non-directory object at the root level with
             /S (includes subdirectories recursively), XXCOPY prompts
             you to clarify whether the name is a directory name
             that simply does not exist, or a filename pattern that
             is meant to be searched for at every subdirectories.
               e.g.,  xxcopy c:\nonexistent  d:\my_dst\  /s
             Quite often, it happens to be a typo error.
    How can we remember all these switches?
      No.  You are not expected to memorize them.  Instead, you should
      remember the following:
         Enter the question mark (?) as your response to the prompt.
       XXCOPY will show the command switch that suppresses the
       particular user prompt.
    What is the four-way user options in (Y/N/A/Z)?
       Starting with Ver 3.00, some of XXCOPY's user prompts end with
       (Y/N/A/Z) that gives you the following options:
          Y   // Yes to the single occasion
          N   // No  to the single occasion
          A   // Yes to All remaining occasions of similar kind
          Z   // Zilch (No) to all remaining occasions of similar kind
       In the past, the Z (Zilch) option did not exist (and the users
       were forced to use the Ctrl-Break to terminate the whole operation).
       But, the Z option may become useful (e.g., to disallow file-overwrites
       from a certain point in operation).
       Incidentally, the enigmatic user prompts with the option of (Y/N/A/R/S)
       has been abolished due to its complexity and unpopularity.
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