The LockScreen setting locks Keystroke so that other applications cannot be accessed using the [Alt]+[Tab] key
combination (works only in full screen or maximized mode).
Usage:
LockScreen accepts the following values:
0 - Allows access to other programs by using the [Alt]+[Tab} key combination.
1 - Prevents access to other programs by using the [Alt]+[Tab} key
combination.
Example: LockScreen=1
Default:
0