A faster and more fun way of drawing diagrams

If you're like me, you don't like dragging and dropping items to make UML diagrams. On the other hand, although I'm a complete anti-talent at drawing, I find it helpful to sketch and map out things. I always take hand written notes even if it would be more comfortable simply to type things in a text editor of choice. I like to repeat in my head and visualize the sentences I'm tackling. Things seem to settle down better. Coming back to the topic:

You can get to this:

Just by typing this:

Mind->Body: sleep(6.5h)
    alt onWakeup
        Body->Mind: setEyesFeeling(TIRED)
        Mind->Body: snooze(10m)
            loop rand(1,9) times
                Body->Clock: press(snooze)
        end
    end

Link: http://www.websequencediagrams.com/

What do you think?