These cards represent possible interactions you may have with elements in the Scenery (objects, characters, etc.). When you discover a Scenery card, take all the cards from the Interaction deck with the same number as that Scenery card. Place them on the table next to the matching Scenery card, taking care not to turn them over.
However, if a card says TURN THIS CARD OVER IMMEDIATELY.
, as soon as you finish placing the Interaction cards, immediately turn it over, read it, resolve it, and discard it.
Next to the number, each Interaction card shows dots indicating how many cards with that specific number are in the deck. This makes it easier to verify that all of them have been placed. This information is also present on the discovered side of the Scenery cards.
EXAMPLE. If you discover Scenery card #23, you would take all the Interaction cards marked with the number 23 (in this case, two cards), place them on the table next to that Scenery card, then immediately turn over the one that says TURN THIS CARD OVER IMMEDIATELY.
and resolve it.