The default view of boreholes in 2D views is represented by colored “pipes”, where the color indicates the existing interpreted rock and soil types.
The colors represents different main soil types:
Diagrams would be of great help to decide how to interpret soil/rock.
In the “Presentation setup”, there is an option to show diagrams in the Cross/Long-section view.
At the node “Borehole and Profile”, there is an option to show diagrams or not: