A photograph of a large schematic diagram printed on a walnut‑toned wooden tabletop, showing dozens of circular nodes in soft brown and olive shades connected by thin, curved lines in a muted ochre, with semi‑transparent overlays of flow arrows and diagram labels. The scene includes a faint film‑grain texture across the image and a small potted herb plant resting near the edge of the diagram, illuminated by warm natural light from a nearby window.