PV3D中文手册，核心进行了汉化，英文不好的朋友可以下载查看。-PV3D Chinese Manual, the core was finished, English is not good friends can download to view.

flex中文帮助手册 是学习flex工具及语言的必备参考手册，可以下载下来查看-Chinese help manual of flex，it is the basic reference manual tool of studing flex