	Draw vertex		Draw edge		Set Start
	Delete vertex or edge		Set cost or label

Dijkstra's Algorithm Solver

Usage

While Draw vertex is selected, click anywhere in the canvas to create a vertex.
To draw an edge between two vertices, select the Draw edge radio button, then click on the vertices you want to connect.
To change the cost or vertex label, click on the cost or the label while Set cost or label radio button is selected.
Finally, to run the algorithm, select Set Start then click on the starting vertex.