where
The ARC: command is used to specify or redefine arcs between two
given nodes
The ARC: command can be used in combination with the
GRID0: command to generate influence diagrams with a small
number of arcs. The autoarc control can be used to have [B/D]
draw arcs automatically. See §20.9 for details.
and 
are the names of elements or bases. A
is an integer.
and on an influence diagram. The arc
type is given by the integer A, which should be an integer constructed
from the bits discussed in Table 11.4. Any pre-existing definition
of an arc between and is overwritten. In particular,
if A=0, meaning no arc between and then the former
arc definition, if any, is deleted.
, B 
, A 