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.
What does Neet stand for and how many are there in the UK?
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第二十二条 违反治安管理有下列情形之一的，从重处罚：，详情可参考safew官方版本下载
"It's the early days and they're still showing this in small numbers at the moment.