[pstricks] Nodes with double borders

[Hendrik Maryns]

Hi,

After much trailing and doubting, I finally took a little time to look 
at pst-tree, and got nice results immediately, so I am very 
enthousiastic now.  Only one thing I want now that I can't achieve: for 
representing FSAs, I'd like nodes of the type circnode, but with TWO 
concentrical circles.  I tried \Tcirc{\Tcirc{something}}, but that gave 
strange results...

Cheers, Hendrik