WP 34S --> WP 31S

[Marcus von Cube]

I've an idea for quick catalog access which might be worth considering:

Just omit all Greek letters from the keyboard and change the sort order instead:

A, a, Α, α,
B, b, Β, β,
...

Put the degree symbol on the dot because it looks similar.

On the 34S, shift can be held down. The implementation of the keyboard driver should do the same on the 31S. This makes it relatively easy to repeatedly go up in a catalog or R↑ if the shift key is on the opposite side of the keyboard for two finger access.

Another, remotely related remark:

We should color code the letters which are mapped to registers or we could even allow all letters for register names. So we can have 26 general purpose registers if we force prefixing access to stack registers with a dot or with some other key to distinguish it from the gp register of the same name. The display would be lowercase for stack registers and uppercase for gp registers.