void *q = page_alloc(PAGESZ);
What about DECSTBM and DECLRMM?DECSTBM and DECLRMM allow you to set “margins” in the terminal and then “scroll” within those margins. DECSTBM is for vertical margins and DECLRMM is for horizontal ones.，详情可参考谷歌浏览器【最新下载地址】
* @param right 右边界（不包含），更多细节参见heLLoword翻译官方下载
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