flash 的swf编码格式说明文档。主要是flash9的说明说明文档，可以帮助播放器的实现。,swf encoding format of the flash documentation. Note mainly flash9 documentation that can help players achieve.

实现主界面的折叠菜单，视图表现为左边的菜单，可以查看主菜单下的子菜单。主菜单上下滑动。-Folding menu for the main interface, view performance for the left menu, you can view the sub-menu under the main menu. Slide up and down the main menu.