Ключевые слова: 2019ncov, caution, community, concept, contamination, corona, coronavirus, covid19, direction, disease, distance, distancing, elevator, employee, floor, foot, group, health, icon, inside, isolation, keep, lift, marker, marking, markings, medical, office, people, person, prevention, protection, public, quarantine, safety, sign, social, spread, standing, tape, virus, waiting, worker, young,