test of possible UTF-8 glyphs usable to notify T9 mode like is done on phones (usually "123", "abc", "Abc", "ABC", and the same with some dots on the left implying speed for dictionary modes).
It's probably simpler to use icons anyway.
//Abc
≡Abc
≫Abc
≒Abc
∴Abc
∵Abc
∷Abc
Abc
Abc
⺀Abc
〃Abc
≈Abc
=Abc
#Abc
"Abc
'Abc
*Abc
µAbc
.:Abc
¨Abc
