Developer's DescriptionBy KosokKill or perform different options on multiple tabs at a time.Enable you to sleep, duplicate, placehold, and kill multiple tabs at a time. To use the add-on press Ctrl (or Shift) +click tabs to select them then right click tab to select operations duplicate: copy the selected tabs in new tabs, placehold: pack tabs into a placeholding tab, UnzipPlacehold: unpack the placeholding tab, freeze: make selected tabs asleep, and close: close selected tabs.