[pstricks] Brace as node connector?

[Christian Stork]

Hi again,

I was wondering if somebody has some macros to use braces as node
connectors.  This would be a very nice feature, which I would use quite
often. :-)

You can see an example of what I mean on page 14 of the beta
documentation.  The second graphic uses a brace to signify the range of
armA.  Sadly, the code for this brace is not given and I couldn't find
the source of betadoc1.ps.  (I looked on CTAN and in the Debian source
debs.)

Any help welcome,
Chris