Lootfilter keywords?

Are the lootfilter keywords documented somewhere?

In POE1 I write my own simple filter to set text size, outline, translucency, and a few minimap icons and I'd like to do the same in POE2, but with so many different loot items I would like to see the keyword options and what minimap/world map/sound/text/background options are supported.

I can piece some of it together by looking at various filters people have made work, but I'd much rather find any kind of official list.

I don't expect complete class names for every item or anything silly like that, just the allowed categories to compare on and the cosmetic options to display.

Oh, and is the "continue" keyword new? I see it in filters online and don't recall it being in POE1 at all. Maybe it was added and I missed it. If it works like I think it does, it's a very good addition.