Thanks for your response. What I am more confused about is that adding only
an exclusion mask caused a drop of 76 in the waytotal; adding only a
waypoint mask caused a drop of 30474; but adding both caused a drop of
40118. Why is the drop in waytotal greater when using both an exclusion and
waypoint mask compared to the sum of the drops when adding each separately
(i.e. 76 + 30474 < 40118)?