The media forms themselves, recorded as reference entries: the roughly twenty mediums this atlas tracks, from film, television and radio to photography, animation, video games, newspapers, magazines, comics, podcasting, social media and streaming video. Each entry explains what the form is, how it carries and delivers its content, and how it differs from its neighbors, so a work, a technology or a concept can be placed in the medium it actually belongs to rather than the one it merely resembles.