请问zbrush 的subtool面板里的Append 和Insert区别是什么?

请问zbrush 的subtool面板里的Append 和Insert区别是什么?

subtool是层，如果你学过ps应该知道层是什么，append的功能是在新的一个层里插入模型，而insert是在当前层中插入模型

Append
Press Append to add a new SubTool to the list. Choose the model you want to add from the pop-up; it will be added to the end of the list. ZBrush Primitives will automatically be converted to polymeshes, allowing them to be sculpted.
Insert
The Insert button will add a new SubTool to the list, immediately below the selected SubTool. Choose the model you want to add from the pop-up. ZBrush Primitives will automatically be converted to polymeshes, allowing them to be sculpted.
Append是添加新物体到最底层，添加后当前选中物体是原物体
Insert是添加新物体的当前编辑物体下层，添加后当前选中物体时新添加的物体