parid0935 | Sat, 01 Mar 2003 16:30:41
In any case, whenever two nodes are merged, the situations of other nodes may also be affected, necessitating recalculation of their property values, as well.
Whenever two nodes are merged, the situations of other nodes may also be affected and their property values must be recalculated.
Stated this in the affirmative and as a "must." Assuming it is not possible to determine if situtations have been changed without recalculation of the property values and comparison to the original.