Priorities
| Priority | Description | 
| P1 | Mandatory - The set of features required as a minimum for this release to be complete. The product will not ship without these. | 
| P2 | Highly Desirable - A key feature that will make the product more complete, has great benefits to the end-user and major strategic impact. | 
| P3 | Nice to Have - Lowest priority feature that may be incorporated, dropping first in favour of delivering P2 items. | 
| P4 | Future - Intended for future release, included as they may influence design decisions and should be associated with the roadmap. | 
| D | Deleted - Requirements that have been deleted from the product roadmap. | 
| Px | Tentative - Requirements that are proposed but have not yet been approved | 
Navigating to Web content
In most mobile browsers, basic activities like URL entry, bookmarking and search are too hard to use.  These need attention, and "awesome-bar" like innovation.  An equivalent to multiple windows/tabs is needed.
| Basic navigation | 
| Priority | Milestone | Feature | 
| P1 | M1 | Simple URL entry | 
| P1 | M1 | Back | 
| P1 | M1 | Forward | 
| P1 | M1 | Reload page | 
| P1 | M1 | History | 
| P1 | M2 | Awesome-bar URL entry | 
| Bookmarks | 
| Priority | Milestone | Feature | 
| P1 | M3 | Basic Add bookmark | 
| P1 | M3 | Star page | 
| P1 | M3 | Foldering | 
| Multiple page support | 
| Priority | Milestone | Feature | 
| P1 | M3 | Multiple page support | 
| Search | 
| Priority | Milestone | Feature | 
| P1 | M2 | Search box in toolbar (depends on screen size) | 
Navigating within a page
Fennec will enable quick and intuitive access to the content of interest on a given Web page.
| Modes | 
| Priority | Milestone | Feature | 
| P1 | M1 | Standard view | 
| P1 | M3 | Full-screen mode | 
| P2 | M3 | Switch between portrait and landscape mode | 
| Zooming | 
| Priority | Milestone | Feature | 
| P1 | M2 | Zoom to fit page | 
| P1 | M2 | Zoom to fit the width of the display area | 
| P4 |  | Zoom to fit the height of the display area | 
| P1 | M2 | Zoom to relevant section | 
| Scrolling and panning | 
| Priority | Milestone | Feature | 
| P1 | M1 | Scrolling - discreet (e.g., page-up/down line up/down) | 
| P1 | M2 | Panning - smooth movement | 
| P1 | M3 | Keyboard shortcuts | 
| P2 | M3 | Special effects | 
| Layout | 
| Priority | Milestone | Feature | 
| P2 | M3 | Single column display | 
| P2 | M2 | Fit to width | 
| P4 | M3 | Fit to height | 
| P2 | M3 | Scrollbar-free layout | 
| P4 | M3 | Viewport meta tag | 
| Virtual mouse | 
| Priority | Milestone | Feature | 
| P2 | M3 | Virtual mouse | 
Plug-ins
Add-ons
| Priority | Milestone | Feature | 
| P2 | M3 | Add-on discovery | 
| P2 | M3 | Install | 
| P2 | M3 | View installed add-ons | 
| P2 | M3 | Remove add-on | 
Device integration
Installation and update
| Priority | Milestone | Feature | 
| P2 | M3 | Installer | 
| P2 | M3 | Update manager | 
Security
Accessibility
I18N/L10N
Communication
| Priority | Milestone | Feature | 
| P2 | M3 | Send link as SMS | 
| P2 | M3 | Send link as email | 
Developer tools
| Priority | Milestone | Feature | 
| P2 | M3 | Mobile Firebug | 
| P2 | M3 | Remote debugging | 
| P2 | M3 | XUL simulator |