Sometimes, we make new articles to take the place of old (obsolete) ones,
instead of updating them.

This article could be related to others through links in other articles, or
even our external sites. When this happens, there's no way to know where the
obsolete article was linked.

An "Articles that link to this one" list somewhere in the article Edit
window would be useful for this, since then we can update the links to the
newly created article.