<https://forums.geocaching.com/GC/index.php?/topic/272463-can-you-bulk-add-to-bookmark-list/#comment-4684919>
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"What we really need is the ability to run a PQ as an include/exclude certain usernames. I have long advocated an expansion of the PQ criteria. Maybe someday...... "
<https://forums.geocaching.com/GC/index.php?/topic/272463-can-you-bulk-add-to-bookmark-list/>