#@newbold's layout for the Numeric Keypad IIeIncludes the standard layout for all keys except for the left-most column, which is remapped to these keys:
+-----------------+
| Mute | +-----------------+
| Volume Down |
+-----------------+
| Volume Up |
+-----------------+
| Function |
+-----------------+
With Function held down:
+-----------------+
| Mute | +-----------------+
| Brightness Down |
+-----------------+
| Brightness Up |
+-----------------+
| Function |
+-----------------+
And also with Function held down, "Print" (the lower right key) will trigger RESET (putting the controller into bootloader mode so it can be flashed).