;; Debugging(define (node-names set)  (map bn-name set))(define (show-bnet bnet)  `(bnet ,(bnet-name bnet)         nodes         ,(map show-bn               (vector->list (bnet-nodes bnet)))         rec         ,(show-rec (bnet-dissection-tree bnet))))(define (show-bn bn)  `(bn ,(bn-name bn)       parents       ,(node-names (bn-parents bn))       children       ,(node-names (bn-children bn))       values       ,(bn-value-vector bn)       ,(if (bn-flagged bn)          (bn-pinned-value bn)          '*unpinned*)       ,(bn-cdist bn)))(define (show-rec rec)  (if (pair? rec)    `(rec (summation-set           ,(node-names (summation-set rec)))          (evaluation-set           ,(node-names (evaluation-set rec)))          (instantiation-set           ,(node-names (instantiation-set rec)))          (variable-set           ,(node-names (variable-set rec)))          (cache           ,(instantiation-cache rec))          Y          ,(if (null? (net-y-ptr rec))             '()             (show-rec (net-y-ptr rec)))          Z          ,(if (null? (net-z-ptr rec))             '()             (show-rec (net-z-ptr rec))))    `(error in rec ,rec)))