I don't know if I'll ever understand Microsoft's official position with respect to UML. Sure, the concept behind domain specific languages (DSLs) is sound, but is it truly necessary? I haven't seen any proof of that. Well, to be more specific, I should say I don't see a need for DSLs when it comes to software analisys and design -- UML has just about everything I've needed and extending it seems to be the logical answer. On the other hand, DSLs are absolutely fantastic for applications that can visualize their data. Honestly, I think more apps should consider DSLs, but when most developers either don't know or don't use software modelling tools, I have to say I'm not surprised. I, for one, have been meaning to dig into Microsoft's DSL Tools, but haven't had the time. One of these days, perhaps. Either way, this is the foundation for Microsoft's MDA approach... well, the development environment, at least. There's an interesting story there, but I'll blog about that later.