Requested Allow use of number pad for display sizing

[David McA]

I often use the '1' & '2' keys to alternate between full-size and fit-to-screen viewing fullscreen.

However, I can't do this using numbers on number pad - program just exits fullscreen mode.

Please could you make this simple change as proximity of number pad to arrow keys, PageUp, PageDown would give improved ease of use.

Regards,
David