Wiki URLs include both sites and slugs identifying what pages are wanted and where to find them. Storage names substitute for site names when some special addressing is expected.
The name 'origin' indicates storage accessible by request from the origin.
Then name 'local' indicates private storage within the browser associated with the origin.
The name 'view' indicates page retrieval from a variety of stores based on policy favoring viewing.
Inside the wiki client application a variable expected to hold a site's domain name will often hold a storage name or null instead. Null is similar to 'view' indicating reads and writes based on client policy.
Storage policy could be adjustable but is currently hard coded to favor 'local' if present and to choose 'local' when writes to 'origin' fail.