Dia seems to be shaping up quite well; excellent work, guys. One thing that might really enhance it's capability (that I particularly would find useful for complex diagrams) is layer megering objects, especially connection lines, that could span a few layers, i.e. if you would want to connect a class object in one layer to a class object in a layer below it, you could draw a connection line, and specify that the line span lines 2 and 3, for instance. Also, the ability to hide elements would be quite useful, too. Nonetheless, keep up the great work, Dia is an indespensable tool. Eron