* So, brokenlinks can fire whenever any links in any of the
pages it's tracking change, or when pages are added or
removed.
-
-TODO: How to determine if a pagespec is valid to be used with a links
-dependency? Use the same simple pagespecs that are valid for presence
-dependencies? Seems ok.
+* To determine if a pagespec is valid to be used with a links dependency,
+ use the same set that are valid for presence dependencies. But also
+ allow `backlinks()` to be used in it, since that matches pages
+ that the page links to, which is just what link dependencies are
+ triggered on.
[[done]]