The BREAK command is provided so that you can instruct DOS to check for the
abort operation key sequence Fn Break whenever a program requests a DOS
function such as a disk operation.  The command format is as follows:

      BREAK [ON | OFF]

DOS normally checks for Fn Break when performing any standard device
operations (to the display, keyboard, printer, auxiliary device or redirected
devices).  Some programs perform little or no standard input or output and will
not normally detect the pressing of the Fn Break keys (language compilers
as well as some spelling checkers and sorting programs).  This command gives
you the option of being able to abort those programs.

To enable detection of Fn Break whenever a DOS function is invoked, enter
the command with the ON option, to turn it off enter it with the OFF option.
If you are uncertain as to what the current setting is, simply enter BREAK and
the current setting is displayed.
