Inspecting breaklines in the section tool is a great way to validate the design. If the LandXML, visible in the section tool, contains breaklines, those can be turned on from the tool menu:
Breaklines menu
Once the tool is activated a seperate floating window [Breaklines (section)] opens automatically. This windows lists all the files which are visible in the section and contain breaklines. Search -bar at the top of the window can be used to narrow down the results, with text string or numbers.
Breaklines (section)
The Breaklines (section) -window and the section view are interactive. Meaning that if mouse cursor is hovering in the Breaklines (section) window, on top of a breakline, it is highlighted in the section.
If a breakline is clicked from the list, section view is automatically centered to the selected breakline.
Breaklines (section) and Section -windows
As the picture above demonstrates the breaklines are presented as circles. The center of the circle is the location of the breakline.