https://press.opera.com/tag/tab-islands/
Tab Islands Archives - Opera Newsroom
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https://www.opera.com/features/tab-islands
Tab Islands | Arrange tabs in separate tab groups | Opera
Keep tabs arranged in separate groups in Opera. Browse by context, customize islands with names and colors, and collapse groups to save space.
tab islandsarrangetabsseparategroups
https://forums.opera.com/category/55/tab-islands-tabs-and-workspaces
Tab Islands, Tabs and Workspaces | Opera forums
Discuss Opera One's tab features here
tab islandsopera forumstabsworkspaces