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[Larz60+]

a better way to keep backups is to keep the same program name.

• Put all source into a directory named src
  
• Create another directory at same node named backup.
  
• Before makng major changes, create a new directory in the backup with a name similar to src_backup_MMDDYY_time
  
• Copy full src directory into newly created backup directory
  

This way you can go back as far as you need to to restore to a point.

It will make life a lot easire in the long run.