U0 DrawIt(CTask *,CDC *dc)
{
        I64  i, j;
        U16 *ptr = gr.win_z_buf;
        dc->color = BLACK;
        GrPrint(dc, 0, 0, "Move the windows around and watch.");
        for (i = 0; i < TEXT_ROWS; i++)
                for (j = 0; j <TEXT_COLS; j++)
                {
                        dc->color = *ptr++ & 15;
                        GrPlot(dc, j, i + FONT_HEIGHT);
                }
}

U0 ScrollBars()
{
        SettingsPush; //See SettingsPush
        DocClear;
        Fs->draw_it = &DrawIt;
        CharGet(, FALSE);
        SettingsPop;
}

ScrollBars;