The UML modeler is built on top of the Domain-Specific Language (DSL) Toolkit, so you'll need to download and install the Visual Studio 2010 SDK and the Visual Studio 2010 Visualization and Modeling ...

If modeling projects aren't available, check that you have the Ultimate version. Create a new UML Class Diagram and drag classes, interfaces and enumerations from the toolbox, as shown in Figure 1. To ...