I don't know the official name. The pad with the 5 buttons/keys on the left.
I don't think so. The rx-44 file (which is specific to the N810) contains: Code: key <KPEN> { [ Return ] }; key <UP> { [ Up ] }; key <DOWN> { [ Down ] }; key <LEFT> { [ Left ] }; key <RGHT> { [ Right ] }; I suppose that corresponds to this pad. These are these lines I tried to modify (by adding symbols, like for the other lines) in the past.
key <KPEN> { [ Return ] }; key <UP> { [ Up ] }; key <DOWN> { [ Down ] }; key <LEFT> { [ Left ] }; key <RGHT> { [ Right ] };