A list of Article IDs from WhatsOnWhen, constituting an article feed. A list of location IDs from WhatsOnWhen, constituting a location feed. A list of category IDs from WhatsOnWhen, constituting a category feed. An Article. Depending on the context, this may be the contents of an event, an article, a POI attached to a location, a city guide, a destination guide, and other works by WhatsOnWhen. This article is the core building block of WOW products delivered to customers via feeds. A location; generally, this is used by customers who are taking a location feed, and/or customers who are interested in taking POIs. A category; generally, this is used by customers who are taking a category feed. An Article list A Location list A Category list An Article Search Feed A Location Search Feed A Category Search Feed