break before 用例
在当前节点前和后都插入换页符号
This section will be printed on a new page before the current page.
当前节点前后都没有插入换页符号
This section will be printed on the same page as the current page.
在当前节点内部插入分页符号
This section will be printed on the same page as the current page.
在当前节点内部插入分页符号
This section will be printed on the same page as the current page.