Exposed versus non-exposed

Filters allow you to narrow the scope of the data displayed in a view. Filters can either be exposed or not; by default, a filter is not exposed. An example would be using the Content: Publishing status set to Yes (published) to ensure that a view always contains published content. This is an item you would configure to display content to site visitors. However, if it were for an administrative display, you may want to expose that filter. This way, content editors can view, easily, what content has not been published yet or been unpublished.

All filter and sort criteria can be marked as exposed.