The A/D bits exist entirely for the operating system's benefit. The Accessed bit tells the OS which pages have been recently used, enabling page replacement algorithms to choose pages to evict when memory runs low. The Dirty bit tells the OS which pages have been modified and must be written back to disk before eviction; clean pages can simply be discarded and re-read from disk later.
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DeCSS — Wikipedia。关于这个话题，safew官方版本下载提供了深入分析
影片将围绕英雄阵营与反派绍康之间的终极对决展开，故事规模进一步升级，强调「残酷与荣耀」的主题。