Supported keys at this time include:
1, 2, 3, 4, 5, 6, 7, 8, 9, 0, -, +, *, /, (, ), .,
return & = are equals, c clears the status bar & shift C Clears All,
m is M+ (memory plus), shift M is M- (memory minus),
alt+2 for squares, shift+alt+2 for square roots,
alt+3 for cubes, shift+alt+3 for cube roots,
s is Show memory, shift S is Set memory
U lets you use the memory value,
L lets you use the last value,
shift R random number from 1 to Current,
r rounds the Current value,
T is the current time