| Overview | Group | Index | Concepts | 
The routine CPXNETchgarcnodes changes the nodes
 associated with a set of arcs in the network stored in a network
 problem object.
Any solution information stored in the problem object is lost.
Example
status = CPXNETchgarcs (env, net, cnt, indices, newfrom, newto);
| env | A pointer to the CPLEX environment as returned by   | 
| net | A pointer to a CPLEX network problem object as returned by   | 
| cnt | Number of arcs to change.  | 
| indices | An array of arc indices that indicate the arcs to be changed. This array must have a length of at least   | 
| fromnode | An array of from-node indices.  The from-node for each arc listed in   | 
| tonode | An array of to-node indices.  The to-node for each arc listed in   |