root1 dirs, dev, root, bin
root2 bin
root3 bin
root4 etc, lib
root5 lib, 
usr1 dirs, bin
usr2 bin
usr3 bin, lib
usr4 lib
usr5 include, lib, sys
usr6 man1
usr7 man2-manM
usr8:   dosutils
        WEGA-Spell-System  
        WEGA-Accounting-System
usr9:   WEGA-SCCS-System (Source Code Control System)
        WEGA-Menuesystem
        WEGA-Textverarbeitungssystem nroff/troff (Version 7)