Function            isBREAKon - check Ctrl-BREAK flag

  Syntax              #include <ibm.h>
                      isBREAKon();

  Prototype in        ibm.h

  Remarks             checks the state of the Ctrl-BREAK flag. The BREAK
                      status flag can be set from DOS by BREAK ON or
                      BREAK OFF.

                      This function is a macro.

  Return value        returns TRUE if the break flag is on, FALSE if the
                      flag is off.

  See also            isVERIFYon(), setBREAK(), setVERIFY()

  Example             #include <ibm.h>

                      main()
                      {
                           printf("BREAK flag is ");
                           if (! isBREAKon())
                                printf("not ");
                           printf("on\n");
                      }