As symbols of wealth, and easily transported, tapestries and carpets were often displayed, and their use caused damage which was attended to in basically similar ways. Inventories of weaving shops listed departments for the repair of tapestries as early as the 16th century; if in constant use, they tended to be cleaned and repaired every 20 or 30 years. Because of their comparable value to tapestries, carpets were also repaired, rewoven, and reconstructed after they came to be used in Europe as floor coverings as late as the 18th century. Today, the functions these textiles serve determine the course of treatment. In the museum environment, more emphasis is placed on stabilization.