<key_list>
 <key>delivery_mirror_section_title | delivery,catalog/title/z_delivery_related_mirror_section</key>
 <key>preferred_gap_id | category,catalog/id/z_related_preferred_gap</key>
 <key>preferred_gap_strict_membership_id | category,catalog/id/z_related_strict_membership_preferred_gap</key>
</key_list>