Constrains allows enforcing additional structures on the tree.

Consumer characteristics used in the exampe:

NFAMMEM=number of family members

SMALLBUS= small business discount (0,1 binary code)

FIT= home ownership (0, 1 binary code)

ANYRAQT= racquet ball usage (0,1 binary code)

ONAER= number of on-peak aerobics classes attended

NSUPPS= number of supplements purchased

OFFAER= number of off-peak aerobics classes attended

TANNING= number of visits to tanning salon

ANYPOOL= pool usage (0, 1 binary code)

PERSTRN= personal trainer (0, 1 binary code)

CLASSES= number of classes taken