If you open a file on the server and begin editing it, then wander out to a restaurant for lunch, taking your notebook with you, the program should see that the normal home of the file is no longer available and do something intelligent.

• 对于文件来说也是同样的道理，如果你在服务器上打开一个文件开始编辑，然后带着笔记本电脑去餐馆进午餐。 程序应该明白文件正常，宿主地不再可用，它必须做些更聪明的事。