[chef] What is file_backup_path?

[Greg Barker < >]

I noticed the /var/chef/backup folder was getting kinda big. The docs had this to say about file_backup_path:

The location in which backup files are stored. If this value is empty, backup files will be stored in the directory of the target file. Default value: /var/chef/backup.

What exactly goes in there and why? Do I need to be cleaning it out every now and then?

Greg