Board Game Arena

I looked in the official rules but couldn't find the meaning of Preview on a red card (special benefit). Does anyone know?

Edit: by hovering (tap & hold on Android) I found out it means you can look at the first 3 cards from your deck and discard or return each card as you choose.
I think it should be added to the rules.

For each genre there is 1 special genre benefit card (Adventure O, Horror H, Mystery N, and Romance R)
Others are obvious (2c per Adventure, 1s per inked card, 1s+1s per wild), but Romance R needs some explanation.

I'll update the document at some point, but just a reminder that the "how to play" pages are a wiki anyone can edit. https://en.doc.boardgamearena.com/Gamehelphardback