Chapter 12. Overlays and Chrome
This chapter describes the overlay and chrome infrastructure of the Mozilla Platform. That infrastructure provides mechanisms for modular development of XUL applications. Both overlays and chrome depend heavily on data files expressed in RDF.
The overlay system allows a single, final XUL document to be constructed from one or more other XUL documents. It is a merging process that can be set up in several different ways. The overlay system is a component technology designed for larger Mozilla applications. It allows large source files to be split up into pieces.
An example of a document that ...