Following the detailing of shear wall elevations, you may have cross sections for any part of the wall. Such sections show longitudinal and lateral rebars of the wall. In terms of reinforcement, Spider sections show boundary element area reinforcement of the detailed wall too. Section geometry, openings, dimensions, cover and scale are among the other structural data observable on shear wall sections. Furthermore, stirrups are detailed out of the cross section for clarity.
In brief, shear wall cross sections include:

• Longitudinal rebars
• Lateral rebars
• Boundary element area reinforcement
• Openings
• Scales
• Section geometry
• Dimensions
• Cover
• And much more