DIMBREAK command
Breaks dimension lines, extension lines, and leaders at the locations where they cross other entities.
Icon: 
描述(D)
Allows breaking entities such as dimension lines, extension lines or leaders by a certain object and it can also remove breaks.
The dimension entity can be broken on different entities: the dimension line itself (1), on the extension line (2) or on the leader (3).
选项(O)
- 多重(M)
- Allows multiple dimension entities to be broken in the desired spots.
- 自动
- Breaks all the selected dimension entities at all intersections found with other entities.
- 移去
- Removes all dimension breaks from the selected dimension entities.
- 手动(M)
- The width of the dimension break can be manually defined. This option is not available in Auto mode.