> For the complete documentation index, see [llms.txt](https://windows.help.formit.autodesk.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://windows.help.formit.autodesk.com/zh-cn/tool-library/shell.md).

# 壳

基于实体对象，可以创建指定宽度的“壳”。壳对于基于体量模型快速创建墙非常有用：