Related terms
A top-level page is a clipboard page, usually created through the Page-New method, that is not an embedded page. The system creates many top-level pages in routine, normal operation. Your activities can create other top-level pages. Most top-level pages are named, and have an associated class.
Clipboard pages that are not top-level pages are called embedded, and are defined by a property, an instance of Rule-Obj-Property.