I’ve brought it up a couple times. The first time (back in November), I was told:
They never did get back with me on which commands are supported. And when I mentioned about adding it to Help articles, doesn’t seem to have happened. Also have to say, when was mentioned it’s being tracked
Then as a result, I’ve recently reached out to Jan and Brendan on Twitter, hoping to get some movement on it. Not sure the overall status from that follow-up. But I do see where Brendan tagged in Solso and ParedesLJavi.
If you do end up finding out any commands supported, would be great. But I will say that we’ve had a decent amount of people over the years complaining that Brave Search isn’t seeming to refine searches. At the very least, not using the same as Google did.