You can extend or shrink a section line on its parent view. This does not affect the corresponding section view; therefore an update is not necessary after adjusting a section line in this way. Extend is a cosmetic action that can be used to move section line labels away from obstruction on the sheet, for example.
To extend a section line,
1. Click Annotation and then, in the Setup group, click the arrow next to Dep View.
2. Click Extend in the View section.
3. Click one of the ends of the section line to extend or shrink.
4. Click the new point for that end.
5. Continue clicking section lines to extend, or click to complete the operation.
Dep View.
Extend in the View section.
to complete the operation.