What Is opera://flags
I have seen this mentioned in several posts and took a look at it. Some items I think I might want to enable but before I go monkeying around with them I would like to know more.
opera:flags is an accumulation of features that may or may not make it into future versions.
They are mostly unstable, unfinished and unpolished (some of them may not have any effect at all yet). That's why they are hidden in flags and not in settings or available to everyone.
So keep that in mind if you start playing around with them.