Pm Wiki:

The Wiki Trails feature allows wiki authors to create "trails" through sequences of pages in the wiki. To do this, an author creates a "trail page" that gives the sequence of page names as either a bullet or numbered list. The page names must be the first item following each bullet. Then, for each page on the trail, add the markup "<<|TrailPage|>>" somewhere on the page (usually at the bottom). This markup will then be replaced with links to the previous and next pages in the trail, as defined by the TrailPage.

As an example, the page PmWiki.Documentation Index defines a WikiTrail through the set of pages that make up the documentation for Pm Wiki. The special markup

  <<|PmWiki.DocumentationIndex|>>

appears at the bottom of each page along the trail, providing links to the previous and next pages in the trail sequence. Note that this makes reorganizing the sequence of pages or adding new pages quite easy– simply edit the trail page (PmWiki.Documentation Index in this case).

There are a couple of other markups available: ^|TrailPage|^ will show a page's ancestry to the trail page, while <|TrailPage|> will completely omit the "<PrevPage|" or "|NextPage>" markups at the beginning or end of the trail respectively.

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