Sometimes a work can seem to belong to two or more different categories, and it can be had to know just how to treat it. In fact the present editor still doesn't know how to treat such a work, and several approaches are extant in the wiki at this time.
It seems that there are several different ways that a work may fall under this heading.
As mentioned above, there are a few different ways in which the present editor has attempted to deal with this. All have consequences for the wiki design that have to be taken into account. Here is what is known thus far.
credits
pages and by the Tag plugin in its own pages and in lists created with it. The latter can be dealt with in forming the list, and perhaps the resulting pages can be explicitly written to address this. I have not yet experimented with doing so, and the pages that appear are those auto-generated by the plugin.So no universal solution has been found yet, and perhaps each kind of work should be treated differently. Any better answers are welcome.