Gecko:Reflow Refactoring - MozillaWikiBackground and Terminology The CSS specification has a concept of a rendering object, which it calls a box. There is a tree of rendering objects parallel to and close-to-isomorphic to the content (or DOM) tree. In Mozilla, these rendering objects are implemented by objects that implement the nsIFrame interface (and, for XUL, also the nsIBox interface), known as frames. There are three main operati
