WVis is a modified version of Bengt Jardrup's VIS tool. It's the exact same program as the one you can get here... http://user.tninet.se/~xir870k/ ...except that it has multithreading turned on. Basically, you get 1 thread for every core/processor you have on your machine. This will speed up VIS compile times dramatically if you have a machine with multiple cores/processors. Usage and syntax are exactly the same with the exception of one new argument: -threads [n] This lets you override the default number of threads that WVis wants to give you. This is useful if, for example, you have 8 cores in your machine but only want to tie up 7 of them doing the VIS. "-threads 7" will do that for you. Enjoy! - Willem (www.wantonhubris.com)