It is a simple java program that solves signal flow graphs by using an easy GUI to draw on it and easily get your results Main features:

1. The program lets the user choose the position of the nodes.
2. The program gives any node added a number shown over it which is used to determine the node when adding edges or when requesting to solve the graph
3. You can change the weight of an existing edge by adding it again with the new weight value.
4. The weight and the direction of an edge are shown on it.