I see that the API includes a few feed-related things, like get a feed for recent changes. Also, the help text says that most MW instances contain the same syndication functionality as Wikipedia, but there are some exceptions (for example, it says wikimedia.org "offers cross-project information like page view metrics").
I would like to create various custom feeds. I have thus far been unable to find any information on how to do so. Could anyone point me towards information on this, please? Thanks.