A preset is a named bundle of views and roles for a kind of page: \"the layout for a project space\", \"what an event page needs\". Assigning a preset to a space or resource attaches all of its views at once, and makes its roles available there, instead of one display and one role attachment at a time. A preset is defined once and assigned to as many pages as fit it.

A preset names the page types it is meant for, its views — some marked as top-level, shown even where the page has no other content — and its roles.