This document provides information about scriptwriting conventions for different media, including films, radio, and video games. It discusses the use of slug lines and action text in film scripts to describe locations, times, and character appearances. It explains how radio scripts differ from filmscripts in being fully audio-based and uses conventions like "OFF" and "voiceover." It also notes that video game scripts like those for GTA 5 can have branching narratives with optional elements to allow for player choice and agency.