brokenlinks directive is supplied by the [[!iki plugins/brokenlinks desc=brokenlinks]] plugin.
This directive generates a list of broken links on pages in the wiki. This is a useful way to find pages that still need to be written, or links that are written wrong.
The optional parameter "pages" can be a PageSpec specifying the pages to search for broken links, default is search them all.
[[!brokenlinks pages="* and !recentchanges"]]