For bugs in Firefox Desktop, the Mozilla Foundation's web browser. For Firefox user interface issues in menus, developer tools, bookmarks, location bar, and preferences. Many Firefox bugs will either be filed here or in the Core product. (more info)
Follow-up from bug 471753 comment 3. We need a helper function which gets a help topic parameter and returns a URL for the respective help topic. We also need to make all the places in our code which do that manually use that helper function.