UMLet is a simple but effective software design tool. It compares favorably against heavyweights such as Microsoft Visio. Some key things to know for the beginner or someone who hasn't used it in awhile:
- To duplicate an element, double-click the element
- Adjust the arrow head or line format by adjusting the text in the Properties pane
- To select, press Ctrl and then mouse-drag around the elements you want
