AutoCAD MEP 2022 toolset displays symbols that represent unique conditions in the layout. For example, rise/drop symbols reflects the elevation direction of vertical segments in the layout for any predefined orthographic view (top, bottom, left, right, front, or back).
You can display objects differently based on elevation. You can also change the appearance of hidden lines, layers, line types, or color for crossing or overlapping objects at different elevations in 2-line plan views. For example, AutoCAD MEP 2022 toolset displays hidden lines as dashes, as shown next.
Hidden lines shown as dashes