&backup_hierarchy($base, $number, $root, "scripts");
# get all C++ code project hierarchies.
-&backup_hierarchy($base, $number, "$root", "core");
+&backup_hierarchy($base, $number, "$root", "nucleus");
&backup_hierarchy($base, $number, "$root", "octopi");
&backup_hierarchy($base, $number, "$root", "graphiq");