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     Backup (Text)
 
     The Backup switch determines what happens to the old copy of a
     file before the new version is saved to disk.
 
     Syntax
 
     Backup:[ undel | bak ]
 
     (none)    No backup: PWB overwrites the file.
 
     undel     PWB moves the old file to a hidden directory so you can
               retrieve it with the UNDEL utility. The number of copies
               saved is specified by the Undelcount switch.
               See: Undelcount, ◄About RM, EXP, and UNDEL►
 
     bak       The extension of the previous version of the file is
               changed to .BAK.
 
     Default
 
     Backup:bak
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