True Opera Wiki:Manual of Style

Operas
Articles on operas use infobox opera. This template includes lots of links and categories that are automatically added when the parameters are filled out.

If the title of the opera starts with an article ("the" for English, "Der" for German, "il" for Italian, etc.), that article should be omitted with a sort key – like this:  – at the foot of the page just before any additional categories are listed. For example, the page for has a sort key that looks like this:. This way, when we go to a category that includes this page, it will be listed under T instead of L.