Definitions
The terms used throughout this documentation, from the top of the hierarchy down: World → Campaign → Article.
Worlds
A World is an optional grouping above campaigns, for sequels and parallel stories set in the same universe. Campaigns in one world share article browsing and automatic cross-campaign linking, and appear together on your campaigns page. A campaign belongs to at most one world. A world has a single owner, but inside each campaign that campaign's roles still govern access. See Worlds.
Campaigns
A Campaign is the workspace for one game. It holds the articles, images, groups, and members. The campaign itself has a visibility (public or hidden) and a status (active or concluded), and each member has a role (Creator, GameMaster, Player, or Spectator).
Articles
An Article is one piece of the campaign's record: a character, a place, a session log, a theory. It is written in Markdown, takes its title from its first # heading, and may carry a type, labels, a stable key, and a place in one or more trees. Its visibility is public, group-restricted, or author-only. Members discuss it in notes.
An article has two texts and usually only one of them exists. The published version is the one the campaign reads. A draft is the author's working copy, which nobody else can read and which becomes the published version when the author publishes it. Each publish is kept as a revision, so an article's history is the versions it has been published as. See Drafts and Publishing and History.
Images
An Image has a page of its own: a title, a Markdown description written by its uploader, pins that link back into the wiki, and a list of the articles that show it. An image is read by whoever can read a place it is shown, so a fresh upload is yours alone until you place it somewhere or give it an audience. See Images.
Groups
A Group is a named set of campaign members, such as party. Articles, secret blocks, and notes name groups to say who may read them, alone or in combination. Two groups are kept by the campaign's roles rather than by hand: gm for the Creator and the game masters, players for the players. See Secrets.
Trees
A Tree is a named hierarchy, such as "Locations" or "The Siege Years". An article declares its place in a tree with a directive and can sit in several trees at once. See Navigation.
Notes
A Note is a threaded comment on an article, written in the same Markdown as the article itself. A note carries its own visibility and is read by the people it addresses who can also read the article. See Collaboration.