An indication of the substances or materials used in the creation of a work, as
well as any implements, production or manufacturing techniques, processes, or methods
incorporated in its fabrication, presented in a syntax suitable for display to the end user
and including any necessary indications of uncertainty, ambiguity, and nuance. For works
on paper, descriptions of watermarks may also be included (For marks applied to the work
or support by the artist or subsequently by another person, see INSCRIPTIONS.) (e.g., oil
on canvas, egg-tempera paint with tooled gold-leaf halos on panel, Carrara marble on
granite base)