Visualizing using Visgraph

I've learnt that we can visualize (preview) a text-based 'directed graph' using visgraph. I just learn to use them, so all i can say (after a sneak preview and simple test), it is magnificent!

What i found so far, it is easy to draw directed graph e.g. FSA using visgraph. It suits my need. All the drawings are done automatically and nicely organized. We just specify it using a special specification language in text format. That's all i can say (so far).

I'll write more later.