If one were to refer to nodes on the two ways instead of the way itself,
it would remove the ambiguity wouldn't it? Albeit more complicated for
the consumer to work out, in that it would have to decide which way the
two nodes were on.
|A
*a
|
c| b
-*---*---*--B
|
|
*
|
from a to b via c, rather than from A to B via c
David