File types and file extension
When you define file and folder backups, file types are a quick way to include the files that you use the most. For example, if you keep music files on your computer, you can configure a backup to include all music files. For example, .mp3, .wav.
The most common file types and extensions are already defined for you. But you can define additional file type categories as needed, and then edit them at any time. For example, if you install a new program that requires the use of two new file extensions (for example, .pft and .ptp,). You can define a new file type and define the two file extensions for that category. Then when you define a backup, you can select the new category. When the backup runs, all files that end with .pft and .ptp are backed up.