Shared components used by Firefox and other Mozilla software, including handling of Web content; Gecko, HTML, CSS, layout, DOM, scripts, images, networking, etc. Issues with web page layout probably go here, while Firefox user interface issues belong in the Firefox product. (More info)
Created attachment 549711[details][diff][review]
These arrays tend toward holding three different values instead of booleans.
IID not changed since the interface hasn't really changed AFAICT, but I can change it if necessary.