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)
Covers keyboard shortcuts, access keys/accelerators, and navigation by using the keyboard (not the mouse or other input device).
Examples: Ctrl+W not closing the browser window under Windows. Command+N not
opening a new browser window under Mac OS. Alt+left arrow not going to the
under Linux. Alt not accessing the menu or access keys under Windows. Also, the
debate as to use Alt or Ctrl under linux as the keyboard accelerator key for
shortcuts. Requests for additional keyboard shortcuts.