Try Hugin - see http://www.hugin.com/
In Hugin, you do get access to the junction tree and can for example
traverse it. The operations that can be done on the junction tree are
pretty restricted, though, however I believe some of these restrictions
are going to be lifted in the next version of Hugin.
HTH,
Ole J.
This archive was generated by hypermail 2b29 : Thu Apr 05 2001 - 10:42:00 PDT