BREAK

Sets or clears extended CTRL+C checking. You can use this command at the    
command prompt or in your CONFIG.SYS file.

You can press CTRL+C to stop a program or an activity (file sorting, for
example). Typically, MS-DOS checks for CTRL+C only while it reads from the
keyboard or writes to the screen or a printer. If you set BREAK to ON, you
extend CTRL+C checking to other functions, such as disk read and write
operations.

Syntax

    BREAK [ON|OFF]

To display the current BREAK setting, use the following syntax:

    BREAK

In your CONFIG.SYS file, use the following syntax:

    BREAK=ON|OFF

Parameter

ON|OFF
    Turns extended CTRL+C checking on or off.