对于一个过程，更改操作相当于撤销并重新创建。
For a procedure, an alter action is equivalent to a drop and re-create.
然而很多操作伪装成防撤销的，但其实很容易恢复。
Many operations, however, masquerade as Undo - proof, but they are really easily reversible.
程序立即撤销打印操作。
修复操作是不可撤销的！
你可以使用重做命令来扭转撤销命令进行的操作。
You can reverse the action of the Undo command by using the Redo command.
只有最后一次操作能被撤销。
当撤销命令不可用时(变灰)，则不能撤销之前的操作。
When the undo command is unavailable (dimmed), you cannot undo the previous action.
可以撤销多次操作。
当然，如果你发现操作错误，你可以撤销刚才的移除重复记录操作。
You can, of course, back out of remove duplicates if you make a mistake.
因为易于操作，所以单次撤销非常有效。
This facility is very effective because it is so simple to operate.
因为易于操作，所以单次撤销非常有效。
This facility is very effective because it is so simple to operate.
应用推荐