Running Object Snap Setting 运转对象捕捉设置

Some object snap may override other if Select All 如果全选，一些对象捕捉会覆盖其他的对象捕捉

To make the object snap work easy during drafting, select those object snap is not override each other. 要对象捕捉发挥最大功能，只选择那些不会互相覆盖的对象捕捉

Select Endpoint, Midpoint, Center, Node, Intersection and Extension as a running object snap. 选择端点，中点，圆心，节点，交点及延长线。