Boring subject but I have to ask: Apart from speaking characters who are first introduced in a script, camera directions, sounds, the slug lines, transitions, what other items must be in caps? I ask this because I read a well known script in which props were in caps. Must they be? I had not come across this before: "She pulls out her expensive, VELVET JEWELRY BOX, opens it dramatically ..."
My guess it's in caps when the prop is important to the story... Any thoughts?