A wiki page is content specifically designed to be easily authored and combined with other similarly formatted pages to be viewed as a hypertext.
Federated wiki pages are composed of various kinds of paragraph-like items assembled into a story. One refers to a page by title accepting that there is some ambiguity to be resolved. A history of actions travels with the page to help make sense of duplicates.
Wiki pages come from many places. Most come one site, the origin, but lots come from some other site, a remote site Still more just show up from the strangest places.
See Page Place Clues for visual hints as to where pages have been found.