Introduction &umbrello; is a ¨ diagram tool that can support you in the software development process. Especially during the analysis and design phases of this process, &umbrello; will help you to get a high quality product. ¨ can also be used to document your software designs to help you and your fellow developers. Having a good model of your software is the best way to communicate with other developers working on the project and with your customers. A good model is extremely important for medium and big-size projects, but it is also very useful for small ones. Even if you are working on a small one man project you will benefit from a good model because it will give you an overview that will help you code things right the first time. ¨ is the diagramming language used to describing such models. You can represent your ideas in ¨ using different types of diagrams. &umbrello; 1.2 supports the following types: Class Diagram Sequence Diagram Collaboration Diagram Use Case Diagram State Diagram Activity Diagram Component Diagram Deployment Diagram More information about ¨ can be found at the website of OMG, http://www.omg.org who create the ¨ standard. We hope you enjoy &umbrello; and that it helps you create high quality software. &umbrello; is Free Software and available at no cost, the only thing we ask from you is to report any bugs, problems, or suggestions to the &umbrello; developers at uml-devel@lists.sourceforge.net or http://bugs.trinitydesktop.org.