It bubbles obscenely, distends and then bursts into a hundred tiny insects which run for the darkness in every direction. Rooms have before and after routines just as objects do, and they apply to anything which happens in the given room. This particular rule could easily enough have been part of the definition of the mushroom or the sunlight, and in general a room's rules are best used only for geographical fixtures. Sometimes the room may be a different one after the action has taken place. The Go action, for instance, is offered to the before routine of the room which is being left, and the after routine of the room being arrived in.
Some objects are present in many rooms at once.
If the rainforest contained many misty rooms, it would be tedious to give the full list and even worse to have to alter it as the mist drifted about in the course of the game. Some pieces of scenery afflict the other four senses. Look , Listen , Smell , Taste and Touch . Make an orange cloud descend on the player, which can't be seen through or walked out of. Reflect these too.