I64 Saphir(Bool enable = TRUE)
{
    if (enable == saphir.enabled) {
        return enable;
    }
    fn_patch(&Blink, &saphir_Blink, enable);
    fn_patch(&DocBorder, &saphir_DocBorder, enable);
    // fn_patch(&DocBorderLstDraw, &saphir_DocBorderLstDraw, enable);
    fn_patch(&DrvTextAttrGet, &saphir_DrvTextAttrGet, enable);
    saphir_cursor(enable);
    saphir_keydev(enable);
    if (!enable) {
        DCFill;
    }
    saphir.enabled = enable;
}