Note that this is not mandatory to be identical, but it makes the things easier during the configuration restore process, which is described in the next section.
注意，不一定要与现有安装完全相同，但是这样做会 简化配置恢复过程（配置恢复过程将在下一节介绍）。
2
Note that the first two code blocks within the new function are almost identical to those in the original.
注意，新函数中的前两个代码块与原来函数几乎相同。
3
Note that the syntax of using the $treeFarm context attribute reference is identical to the $treeList variable reference examined earlier.