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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.。关于这个话题，WPS官方版本下载提供了深入分析
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Next: 793 Unicode characters look like Latin letters but aren’t (yet) in confusables.txt — novel confusable discovery from the full Unicode space.，更多细节参见WPS下载最新地址