<https://forums.geocaching.com/GC/index.php?/topic/272463-can-you-bulk-add-to-bookmark-list/#comment-4684885>
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"Okay - so there is a list already out there - didn't think to look on the page for one of the caches.  Is there a way to copy an existing list to a list of my own?  That would simply make it faster to get to. \n"
<https://forums.geocaching.com/GC/index.php?/topic/272463-can-you-bulk-add-to-bookmark-list/>