ENG button in Casio calculator

[BERNARD MICHAUD]

Hi Salvo I found this in a Manual called hpPrime2Manual.pdf

AFormat Defines the number display format used for number
display in the Home view and to label axes in the Plot
view.
From Symbolic setup, choose Standard, Fixed,
Scientific, or Engineering in the Number Format
field.
In a program, store the constant number into the variable
AFormat.
0 System
1 Standard
2 Fixed
3 Scientific
4 Engineering
Example:
3  AFormat

HFormat Sets the number display format used in the Home view. In
Home Settings, choose Standard, Fixed,
Scientific, or Engineering in the Number
Format field.
In a program, store one of the following the constant
numbers (or its name) into the variable HFormat:
0 Standard
1 Fixed
2 Scientific
3 Engineering