Partial-uninstall feature

In a file-sharing program with a partial-uninstall feature, if a user uninstalls one of the programs from their computers, the process will leave behind a file that will cause any subsequent installation of any version of the same program to share all folders shared by the “uninstalled” copy of the program. Whenever a computer is used by more than one person, this feature ensures that the users cannot know which files and folders these programs will share by default.