骨架网格体由两部分构成：构成骨架网格体表面的一组多边形，用于是使多边形顶点产生动画的一组层次化的关联骨骼。
在虚幻引擎 4 中，通常使用骨架网格体代表角色或其他带动画的对象。3D 模型、绑定及动画都是在外部建模和动画应用程序（3DSMax、Maya、Softimage 等）中创建的，然后通过虚幻编辑器的内容浏览器把这些资源导入到虚幻引擎 4，并将其保存到包中。
Welcome to the new Unreal Engine 4 Documentation site!
We're working on lots of new features including a feedback system so you can tell us how we are doing. It's not quite ready for use in the wild yet, so head over to the Documentation Feedback forum to tell us about this page or call out any issues you are encountering in the meantime.
We'll be sure to let you know when the new system is up and running.
