Data members could also be declared in the i(public) section of a class. This,
however, is deprecated (as it violates the principle of i(data hiding)).  The
static data member tt(s_path[]) (cf.  section ref(StaticData)) could be
declared in the public section of the class definition. This would allow all
the program's code to access this variable directly:
        verb(    int main()
    {
        getcwd(Directory::s_path, 199);
    })

A declaration is not a definition. Consequently the variable tt(s_path)
still has to be defined.  This implies that some source file still needs to
contain tt(s_path[]) array's definition.
