Compressed Folder File
In Microsoft Windows there is a command in the send to context menu that appears when you click on the right hand mouse button, one of the entries in the Send to entry is being able to send the file to a compressed (Zipped) folder, the file extension used for this feature uses the .zfsendtotarget file extension.
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How to open .zfsendtotarget files?
Software to open .zfsendtotarget files
What are .zfsendtotarget files