#include <dos.h>

#define DISPLAY_OUTPUT  2

void main()
  {
    int rc;

    rc = bdos( DISPLAY_OUTPUT, 'B', 0 );
    rc = bdos( DISPLAY_OUTPUT, 'D', 0 );
    rc = bdos( DISPLAY_OUTPUT, 'O', 0 );
    rc = bdos( DISPLAY_OUTPUT, 'S', 0 );
  }