Indicator_Alpha

Keyboard Mode Alpha:

Inv
Keyboard in inverse move
Hyp
Keyboard in hyperbolic mode - also used for password entry
K
Constant calculation mode
Hlt
halted programm - also used for debugger
Run
Mode1, interactive or program run mode
Wrt
Mode2, write programms
Pcl
Mode3, clear, save, load programs.
Deg
Mode4, Tr
Rad
Mode5
Gra
Mode6
Keyboard_Alpha
Alpha entry and display mofe
The mode show that the Alpha Keyboard mode is active. The indicator also blinks twice in that 2 sec pause when displaying an string >11 characters.