Is this a profile?

[fndu]

Titanium,

Just wondering if this is possible?
"is it possible to create loot filters for rares?"
Would it be like this?
[QUALITY] == "Rare" # [INT] >= 500 && [VIT] >= 500 -> [KEEP]

Also, I see some variables on the example I quoted, but do you have a list of all the variables that can be used?
And what does the .dual mean?

Thank you