Move the cursor inside the drawing area and click the left mouse button to define a starting point. This will be first node. The starting point can be anywhere within the drawing limits.
Move the mouse to the next location and click the left mouse button. You have just created the first edge and the second point.
Move the mouse to the next point to create the third point and second edge.
Repeat this process until all points and edges have been created. On the last node, click the right mouse button to close the drawing. The drawing will be filled in with color.
To show all nodes on the drawing, click the Show Vertex button. Instead of drawing the beam, you can input X and Y vertex coordinates, or modify existing beam coordinates.
