> For the complete documentation index, see [llms.txt](https://help.smallbuilder.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.smallbuilder.com/ko/smallbuilder-line-items/line-item-editor/undefined-1/undefined/undefined-2.md).

# 기간 계산 방식