This is not strictly filtering but I'm looking for a clever way to clean up part of an aggregated offline list. The list was formed by copying several lists to a single one. I copied Year 2001 hides, webcams, and Cache Across America all focused on West Virginia. Then looking at the map it became clear that the large cluster of caches at the East side of the state were not in range for this driving trip. That left 3 on the west side of the state. What I would love to be able to do is just put th