Z 4 z 5 hwěžkow pohódnoćeny

wot Andrew Williamson dnja Awg. 22, 2007 · trajny wotkaz

The name of the add-on down plays the functionality a little I feel - I was surprised it does more than just simply duplicate the current tab.
I found the context menu settings a little confusing where you have to deselect the checkbox to change the sub-options though.