TOPIC:

In the project tree select the Section A-A to be your current view. On the actual 2D section vie, right click the view, and from the context menu select Properties

The 2D View properties dialog will the display. Click High Quality and Hidden line removal in this dialog.

You can also hide specific element in this view using the Visibility menu from the same context menu

When i create an elevation view I see all the internal lines of the building. How can I see just the outline of the exterior of the building?