长竖剖面断开保留标高

提示词

在给定长竖剖面的指定省略区插入断开标识，只缩短该段的图面占位；保留上下节点的身份、朝向和标高对应，不把断开画成真实缺件或缩小层高。

Insert break marks only within the specified omission zones of the supplied vertical section, shortening their graphic spacing only. Retain the identities, orientation and level references of the nodes above and below, without depicting missing components or reduced floor heights.