function scr_terminate_writer()
{
    __writerkilled = 0;
    __writerkillable = 0;
    __writerended = 0;
    if (instance_exists(obj_writer))
    {
        obj_writer.__endcheckid = id;
        with (obj_writer)
        {
            if (reachedend == 1)
            {
                with (__endcheckid)
                    __writerended++;
            }
        }
        if (__writerended == instance_number(obj_writer))
            __writerkillable = 1;
    }
    else
    {
        __writerkilled = 1;
    }
    if (button1_p() && __writerkillable == 1)
    {
        with (obj_writer)
            instance_destroy();
        __writerkilled = 1;
    }
    return __writerkilled;
}