To add a node: Enter the x, y, z coordinates and click on the Add Node button.
To add a bar: Select two nodes by clicking over them and click on the Add Bar button.
To add supports: Select the nodes and click on the Add Support button.
To add a force: Enter the force magnitude, select the node and click on the Add Force button.
When your model is completed, click on the Solve button to see the displaced shape. If nothing happens, your model is either a mechanism or incomplete.
To nagivate around the model: Rotate by holding the left mouse. Zoom in and out by using the mouse-scroll. To translate: Hold Shift and hold the left mouse.