I have changed the look on my state-nodes from an ordinary rectangle to a
rounded rectangle. This caused the label with the state name to be placed
a bit outside of the figure, so that when I add a name to my state it is
shown like in this picture: http://farm4.static.flickr.com/3440/3265528805_dd9642471f_o.jpg
It might not be too easy to see, but the first letter of the name is
partially placed outside of the figure. I don't like this, so I would like
to center the text in the label (I have to assume that no state name is
longer than the length of the figure). Is this possible? And where can I
make this change?