To modify the keys of the keyboard, for instance to remove the effects of the "Num Lock" or the "Caps lock" keys, or replace "." by "," on the numeric keyboard. Super !
It is a new sheet on the properties of the keyboard, in the control panel.
Here, for example, the "Caps lock" key is disabled.
To better control his keyboard
Alas, it has no effect on programs that modify some keys (for example, the Microsoft Tetris removes the Num lock).