I try to point those elements out along the way, but I won't talk about performance tuning here.
我在讲述过程中尝试将那些元素指出来，但是在这里将不讨论性能优化问题。
2
The default navigation order is the same as the order in which the elements appear in the document; these attributes allow fine-tuning of navigation order.
默认的导航顺序和元素在文档中出现的顺序一致，这些属性可以更精确地调整导航顺序。
3
The main elements include a pre-installed and pre-configured image, image-specific tuning, and fast deploy-time activation capabilities, as shown in Figure 1.