实际上，操作者能够在没有在线文档或者用户手册的情况下就能够使用系统。
The fact that the operators were able to use it without adequate online documentation or manuals was impressive.
在许多场合缺少好的文档，这时我会试着使用现代的在线帮助系统检查问题。
In the absence of good documentation, I have, on a number of occasions, tried to use modern online help systems to troubleshoot problems.
你需要对PHP有很强的了解，如果你打算使用PEAR的话，并且在线文档经常更新，所以保留一份本地版如果你很多时候离线工作的话。
You need to have a solid understanding of PHP to use PEAR, and the online documentation is frequently updated, so having a local version is only of value if you need to work offline a lot.
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