-* `hard`: both directory schemes are allowed, packages can be built anywhere
-* `all` : only "merged `/usr`" directory schemes are allowed, packages only built on "merged `/usr`" hosts
+* `middle`: both directory schemes are allowed, packages can be built anywhere
+* `hard`: both directory schemes are allowed, packages only built on "merged `/usr`" hosts
+* `all`: only "merged `/usr`" directory schemes are allowed, packages only built on "merged `/usr`" hosts