{

// The program is controlled by command-line arguments. The order of those

// arguments is important. The first argument specififies the the Command-

// class that is used.

int opt = getopt(argc, argv, "sct");

Command* m = NULL;

int result = 0;

switch (opt) {

/* ************* *

* node ordering *

* ************* */

case 's':

m = new command::NodeOrder();

break;

/* ********************** *

* hierarchy construction *

* ********************** */

case 'c':

m = new command::Construct();

break;

/* ******************** *

* transit node routing *

* ******************** */

// this does not actually perform TNR, only some preliminary tests

// are currently performed

case 't':

m = new command::TNR();

break;

}

if (m != NULL) {

result = m->main(argc, argv);

delete m;

} else {

cout << "For help see docu/index.html" << endl;

}

return result;