From within the app, you can update your location, send shouts to your friends, track your 'achievements,' and keep a to-do list that is Shared with your friends.
The purpose and function of those internal tables is to keep track of shared-memory resources status and usage such as buffers, chunks, dbspaces, transactions and so on.
那些内部表的目的和功能是为了记录共享内存资源的状态和使用，例如缓冲区、块、dbspace、事务等。
3
Mr. Wozniak shared the article with Mr. Jobs, and the two set out to track down an elusive figure identified in the article as Captain Crunch.