How does tree style tabs work?
This tree separates all tabs into different groups by the relationship between the child-tab and their parent-tab, which gives you a better insight for all the tabs. All the tabs opened by same tab will become the children of the tab which opens them.
How do I use tree tabs in opera?
Using Tree Tabs, you can manage your tabs in a tree structure with ease, unlike the squished tabs at the top! Use ctrl key to toggle selection, use shift key if you want to select more tabs at once. When you search tabs, result is selected, so tabs can be immediately dragged and dropped.