This package will automatically convert the system to the merged /usr directory scheme, in which the /{bin,sbin,lib}/ directories are symlinked to their counterparts in /usr/.
There is no automatic method to restore the precedent configuration, so there is no going back once this package has been installed.
Constant FATAL ERROR when installing other programs from repository with message: "Constant FATAL ERROR when installing other programs from depository with message: "Both /...(directory) and /...(symbolic_link) exist."