The credit language does not specify the best means of documentation for stair feature option #9 (Use inviting sensory stimulation such as artwork and/or music in stairwells.Elsewhere within the project:)

How would a project sucessfully document inviting sensory stimulation such as artwork? Is there an criteria for the artwork that would determine compliance?

The project features a multi-level open grand staircase that services all regularly occupied floors. There is an ample amount of artwork adjacent to the stair at all levels, however since it is an open stair and the artwork does not appear in a enclosed stairwell I am unsure of how to demonstrate compliance. Any insight on how to best document this feature would be greatly appreciated. Thanks!